Dimitrios Tontis



1985: veterinarian degree, Aristoteles University Thessaloniki

  • 1989: postgraduate studies and Doctorate thesis, Institute of Veterinary Pathology, University of Bern/ Switzerland

Short scientific visits in Pathology Departments of other European countries and USA.


Undergraduate teaching  1995 – present: Faculty of Veterinary Medicine.

Postgraduate teaching animal and comparative pathology subjects at the Faculty of Medicine, School of Health Sciences, University of Thessaly.


  • Professor and Head of the “Department of Veterinary Pathology” University of Thessaly
  • Senate past-member University of Thessaly
  • Past -Board member of Hellenic Veterinary Medical Society
  • Past –Board, founder member of Hellenic Companion Animal Veterinary Medical Society


Animal surgical and tumor pathology, veterinary dermatopathology, animal diagnostic pathology, cytopathology, veterinary forensics and animal abuse.


More than 90 full papers in peer-reviewed journals (citations >950, total impact factor 245), book chapter and cytology book translation, more than 150 presentations in national and international  congresses (summary proceedings), invited speaker in several European veterinary congresses.


Douglas Esson


Dr. Douglas Esson is a board-certified Diplomate of the American College of Veterinary Ophthalmologists. His many areas of interest and expertise include corneal surgery, high-risk cataract surgery, the management of glaucoma, exotic animal ophthalmology, clinical research and the developing field of telemedicine.

Dr. Esson has trained vet students, general veterinarians, interns, residents and ophthalmologists including industry and biotech professionals. His scientific manuscripts have been published in peer-reviewed journals including Veterinary Ophthalmology, the Journal of Glaucoma, Science, Investigative Ophthalmology & Visual Science & the Journal of Zoo and Wildlife Medicine. He has authored texts including sections in “Veterinary Ophthalmology”, “Glaucoma” and “Veterinary Ophthalmic Surgery” as well as his own “Clinical Atlas of Canine & Feline Ophthalmic Disease”. Dr. Esson has also presented his research and clinical studies at ACVO, ECVO, ESVO, WSAVA, ARVO, AGS & AAO and is a consultant ophthalmologist with the Comparative Ophthalmic Research Laboratories (CORL) of Wisconsin & New World Medical (California), a member of the University of Florida’s Center for Vision Research and an associate member of the American Glaucoma Society (AGS).

Dr. Esson is well known in the Southern California veterinary community where he has practiced and worked closely with the profession for over ten years. He regularly teaches and hosts wet labs and his volunteer work with wildlife has appeared in numerous publications and syndicated television shows. He is involved with multiple conservation organizations and projects and is also A regularly invited international speaker.

When not practicing ophthalmology, Dr. Esson enjoys spending time with his wife Dr Sara Calvarese DACVO who is also a board certified veterinary ophthalmologist! Dr Esson & Dr Calvarese met during their surgical training at the Magrane Science Course and share a love of science, ophthalmology and animals of all kinds.


Jennifer Stafford


Dr. Jennifer Stafford is a Diplomate of both American Colleges of Internal Medicine as wel as Emergency and Critical Care. She was graduated from University of Tennessee in 2007. She has few publications in Journals of Emergency and Critical Care. She is working BluePearl Pet Hospital, Maitland, FL at Emergency/Critical Care and Internal Medicine Department. Plus she is Internal medicine mentor for 3 Internal Medicine residents

Her hobby is Horseback riding – lower level eventing and dressage. She achieved the HA Rating in the United States Pony Club.


Federico Fracassi


Federico Fracassi graduated in Veterinary Medicine (DVM) “cum laude” State University of Bologna. At the same Faculty he followed an internship. In 2005 he defended his PhD thesis. After the PhD he become Assistant Professor (2006-now) at the Department of Veterinary Medical Sciences – University of Bologna.

He completed an Alternative Residency in Internal Medicine at the Clinic for Small Animal Internal Medicine, University of Zurich, Switzerland and gained his status of European Specialist in Internal Medicine in 2012 (Diplomate ECVIM-CA).

Duties include patient care, education (to students, post graduate training and training of interns and residents) and research in internal medicine of companion animals, with special emphasis on endocrinology. 

He is the vice president of the European Society of Veterinary Endocrinology (ESVE), president of the Italian Society of Veterinary Internal Medicine (SIMIV) and editor of “Veterinaria”, a peer review journal. His publication list consists of journal articles, research abstracts, case reports and book chapters.

His main research focus is the field of small animal endocrinology.


Jessica A. Miller


Dr. Jessica A. Miller is a Diplomate of an American College of Internal Medicine in Neurology. She obtained her DVM degree in Ohio State University (College of Veterinary Medicine). In 2019 she got a Certification in Neurosurgery from ACVIM.

She is a member of American Veterinary Medical Association and American College of Veterinary Internal Medicine (ACVIM).

She is working in BluePearl Pet Hospital, Maitland, Florida at Neurology and Neurosurgery department.

She is also a House Officer Program Director and Neurology Mentor for House officers at this hospital.

Dr. Jessica A.Miller is a regular visitor of advanced neurosurgery, MRI courses and conferences.

Her professional interests are Neurosurgery, management of inflammatory CNS disease, management of epilepsy.

Her personal interests are Traveling, fly fishing, baking, reading and spending time with her family.


Matthew Pead


Prior to his current posts at the RVC Dr Pead has been the head of the Small Animal Medicine and Surgery group and head of Small animal orthopaedics. He has also worked at the RVC Beaumont Animals’ Hospital, Glasgow Veterinary School and in general practice. In the research field he has been active in research into the physiology of bone and the mechanism of bone disease in both humans and animals.

Dr Pead is a trustee of Battersea Dog and Cats home, and the AO UK educational foundation.  Dr. Pead is the current Chairman of the AO VET UK educational foundation for learning in orthopaedic surgery.

Dr. Pead is particularly interested in fracture repair, arthroscopic surgery and joint replacement surgery. Despite a particular interest in small animal orthopaedics and rheumatology Dr. Pead enjoys working in neurosurgery and soft tissue surgery especially in the out of hours service, and is happy to assist colleagues in farm, equine and exotic practice when orthopaedic skills are called on.


Teresa Goodson


Dr.Teresa L.Goodson is a Diplomate ACVIM Small Animal Internal Medicine and working in BluePearl hospital, Maitland, Florida. She was graduated from University of Illinois at Urbana-Champaign and obtained degree of Doctor of Veterinary Medicine, in May 1997.

She made a lot of seminars and presentations on different internal medicine topics. She is a member of Central Florida Veterinary Medical Association, American Veterinary Medical Association. She is continuing her education on different courses, forums and conferences. The last one was ACVIM in Oncology, 2019


Simon Tappin


Simon trained at the University of Cambridge and, after qualifying, spent 2 years in small animal practice before taking up a Residency in Small Animal Medicine and Intensive Care at the University of Bristol. He joined DWR in 2007. He holds the Royal College Certificate in Small Animal Medicine and the European Diploma in Veterinary Internal Medicine. He is an active member of the British Small Animal Veterinary Association and editor of Companion Journal. Simon particularly enjoys critical care and has been instrumental in developing the Interventional Radiology service at DWR, using minimally invasive techniques and bio-materials to treat many conditions which previously required more invasive surgery. He has lectured widely in the UK and Europe on subjects including emergency medicine and interventional radiology. Simon’s current research interests are the prevalence of the multi drug resistance gene within the UK and the implications on disease etiology.


Ronnie Kaufmann


DVM, Dip.ECVD, Specialist in Dermatology from the European College of Veterinary Dermatology

Dr. Kaufmann graduated from the Koret School of Veterinary Medicine in 2006. After graduation she joined a team of a private veterinary hospital and emergency center where she worked as a general practitioner until 2010. In 2010 she began her residency in dermatology and in 2017 was certified as a diplomate by The European college of Veterinary Dermatology. During her residency she completed training in specific areas of interest such as Dermato-Histopathology, Immunology and Equine Dermatology, held by the European Society of Veterinary Dermatology.

Dr. Kaufmann has been practicing dermatology for 10 years and since 2018 she is the Head of the Dermatology Service of the Veterinary Teaching Hospital and is in charge of dermatology teaching and training at the Koret School of Veterinary Medicine, The Hebrew University.   


Valery Frolov


Doctor of Biological Sciences, Professor of the Department of the State Problems of Economic Development of the SEI SSTU named after Yu.A. Gagarina, Honored Worker of Science and Education, Founder of the Scientific School “Animal Dentistry”, Corresponding Member of RAE, Director of the Veterinary Clinic “Tsentralnaya na Moskovskoy”

He was one of the first in Russia who study  scientific and practical problems of veterinary dentistry in pets. The main area of his activity is clinical dentistry and orthodontics. The result of his scientific activity was the publication of more than 180 articles, 12 patents, 9 books and monographs published both in Russia and abroad. He has been awarded numerous awards, honorary diplomas and certificates; he is also a laureate of numerous competitions, conferences and festivals. He takes an active part in many Russian and international conferences on the problems of morphology, biology and oral pathology in animals.


Tatyana Muzhdabaeva


DVM, Veterinary Medicine Surgeon.

Veterinary clinic “Belyi Klyk” Moscow 2009-2018

Since 2020 – head of the surgical department of the veterinary clinic “Zoolux” in Kiev

Her professional interests: orthopedic diseases of growing animals, dysplasia of the elbow joints, arthroscopy, general orthopedic examination, general surgery.

In 2002 graduated from the Moscow State Veterinary Academy named after I. K.I. Scriabin.

2004-2006 she was in charge of the experimental biological clinic at the Scientific Research Institute of Physical and Chemical Medicine at the Second Moscow State Medical Institute named after N.I. Pirogov

Professional development:

In 2015 – arthroscopy of the joints, Kurgan. Endovet.

In 2016- endoscopic examination of the gastrointestinal tract and the respiratory system in animals. Endovet.

Regular listener of th annual veterinary congresses. Associate member of ruSVOT.


Yevhen Shevchenko


Shevchenko Yevhen

veterinary doctor

endocrinologist, dentist

founder of the veterinary clinic “DIAVET”

and just a happy dad of a diabetic daughter


Evgeny Beletsky


Anesthesiologist at the Animal Health veterinary clinic, Glevakha

Graduated from the Kharkiv State Zooveterinary Academy

2019 – visit to the department of anesthesiology of Istituto Veterinario di Novara, Italy

2020 – a visit to the Jaggy Praha clinic

Permanent participant of international congresses in the field of veterinary anesthesiology

Regularly reads lectures on anesthesiology, and also conducts master classes on inhalation and regional anesthesia


Antonina Gaydamak


Education: Graduated with honors from the National Agrarian University in 2004 with a degree in Small Animal Veterinary Medicine.

Specialization: therapy, dermatology, endocrinology.

Full member of the Ukrainian Veterinary Dermatological Society.

She underwent advanced training in specialization at the following master classes:

“Practical dermatological exercises”. Karas-Tencha I.

“Cytology in practice. How can you get something more? ” Zeldovets B.

“Cytological diagnosis of round cell skin tumors in small domestic animals.” Ignatenko N.A.

“Histological diagnosis of alopecia associated with follicular dysplasia.” Soto S.

“Routine methods of laboratory diagnostics in veterinary dermatological practice.” K. Medvedev

“Treatment of feline diabetes mellitus”. M. Belenson

“Courses in Veterinary Dermatology” K. Medvedev

“School of Veterinary Dermatology” S. Belova

“Skin cytology – simple and not so much” O.Glebova

“Endocrinology. Module 1 ” M. Belenson

She was a delegate from Ukraine at the World Dermatological Congress in Bordeaux (France) in 2016.

She began lecturing in 2016


Dmytro Berezhnyi


Veterinary Medicine Center “10 Friends” (Sumy)

PhD in Veterinary Sciences, Associate Professor, Member USAVA, BSAVA, Certified Knee Joint Surgery Specialist, also in dysplasia, member of the Ukrainian Orthopaedic Commission, laureate “Recognition of the Year”, laureate of “The Golden Scalpel of Ukraine”

Completed an internship in UK, USA, Spain, author of more than 150 publications, regular lecturer at Ukrainian and international conferences both in Ukraine and abroad.

Loves animals more than people. Specializes in complex surgical pathologies.


Ekaterina Cherepanska


In 2007 she graduated from the NUBiP (formerly the National Agrarian University), Faculty of Veterinary Medicine, Kiev. From the third grade she was working in the veterinary clinic “Neovet” as an assistant, since 2007 – as a general DVM. Has been engaged in ultrasound diagnostics since 2008 as a general practitioner, and since 2011 as a narrow specialist. Since 2015, she has been working in the “Vetnova” veterinary clinic exclusively with a specialization in ultrasound diagnostics. She regularly updates her knowledge, studying foreign sources of information, attending narrow-profile master classes of leading foreign and domestic specialists.

She has significant experience in abdominal, thoracic, cardiological, ophthalmological, as well as recently in orthopaedic ultrasound examinations, and actively shares her knowledge with colleagues


Pavlo Karataiev


Veterinarian, neurosurgeon, neurologist

Clinic of neurology and rehabilitation Neurocare

Member of the European Association of Veterinary Neurologists (ESVN).

He studied at the Kharkov Veterinary Academy, then continued his master studies at the NUBiP (Kiev).

Has been practicing since 2010.

He regularly attends conferences and seminars on neurology in Ukraine, Russia and Europe (USAVA, NVC, St. Petersburg neurological and surgical conference, SASAP, ISFM, ECVN annual congress).

He is attending Master classes in neurology and neurosurgery that are regularly held with the participation of domestic and world neurologists and neurosurgeons.

In 2018, he completed an intensive neurology course BrainCamp in Bologna (Italy).

He completed an internship at various neurological centers (Jaggy Praha, Aisti).

Author of articles on neurology in journals.


Since 2015, he has lectured on neurology at conferences in Ukraine and Russia

The main areas of work are neurosurgery, neurology, visual diagnostics in neurology.


Christina Lebedik



2010 – 2016 NUBiP of Ukraine

Specialty: doctor of small animal veterinary medicine

2019 – present – studying at the Sydney University under the program “Feline Medicine “

Specialization: feline medicine, oncology

Member of the International Society of Feline Medicine (ISFM)


2020 – present – felinologist, oncologist at the “CSVM. Osokorki “

2014-2020 – positions of a DVM in clinics in Kiev. Internship in veterinary clinics “Haabersti Loomakliinik” (Tallinn, Estonia), “Happy Valley” (Limassol, Cyprus).


Muzychuk Bohdan


In 2002 graduated with honors from the veterinary faculty of the National Agrarian University. From the same time, he began his continuous experience as a practicing veterinary doctor. Since 2008, he began to engage in veterinary ophthalmology. From 2008 to 2011 he passed an internship at the Center for Eye Microsurgery, where he mastered the methods of drug and microsurgical treatment of corneal diseases, treatment of patients with acute eye trauma, diagnosis and treatment of retinal diseases.

Participant of the online courses of Dr. David A. Wilkie “Pre-operation complications, Intra-operation Complications and Post-operation”


Oleksii Portuheis


Specialization – Orthopedics, Neurology, Oncology.

 He began his practice in 2004. He worked as a surgeon in clinics in Ukraine (Odessa) and Russia (Moscow)

He attended surgical, neurological and oncological conferences and practical courses.

In 2006-2007, he passed two 14-days practical trainings in orthopedics, traumatology, neurology and oncology at the “Belyi Klyk” and “Biocontrol” veterinary clinics in Moscow, Russia

2016 – Practical course on dysplasia of the elbow and hip joints (PAUL DUO PBUO DPO JPS) Moscow (Eldo Vezzoni, Slobodan Tepic)

2016 – Practical course on the treatment of anterior cruciate ligament rupture (TPLO) and dislocation of the knee cap – Moscow (Eldo Vezzoni, Slobodan Tepic)

2016 – a two-day practical course on neurosurgery (pathology of the spinal column and craniocervical junction) Odessa Albul A.V.

2017 – practical course on surgical treatment of thoracic and pelvic extremities deformities, Moscow (Eldo Vezzoni, Slobodan Tepic)

2017 – practical course on thoracic surgery, Moscow (Gilles Dupre)

2018 – two-day practical course on orthopedic surgery for dysplasia of the elbow and hip joints including hip arthroplasty – Zurich (Slobodan Tepic)

Served as a speaker at the following conferences:

NVC – 2014 Moscow Russia. USAVA – 2019 Uzhgorod, Ukraine. HardVet – 2019 Kharkiv Ukraine

Biocontrol – 2019 Cancer Conference Moscow, Russia

VetCamp 2020 – St. Petersburg Surgical Conference, St. Petersburg, Russia

Conducted training on the following topics:

2017 – 2018 – 2 TPLO master classes. “Exvet” Odessa

2019 – a master class on elbow dysplasia. “Exvet” Odessa

2021 – a master class on the treatment of laryngeal paralysis. “Exvet” Odessa


Denis Seleznev


Doctor of veterinary medicine at the “Zoolux” veterinary clinic (has been working there since 2013). He specializes in the fields of surgery, oncosurgery, oncology and orthopedics. Also engaged in cytodiagnostics of tumor processes, actively studies cytology and histology of companion animals. Member of the European Society of Veterinary Oncology (ESVONC).

He graduated from the magistracy in the specialty “Infectious diseases of small animals” Lugansk NAU in 2011. He began his veterinary practice in 2008.


Ivan Stoikov


Graduated from the Kiev Veterinary Faculty in 1993. Was a co-founder of one of

the first private veterinary clinics in Ukraine “Christo”. Has made a PhD studies in

National Agrarian University at the Department of Veterinary Pharmacology in

  1. Was lecturing veterinary pharmacology at the Agrarian University in Kiev

for 3 years. From 1999 to 2015 he worked at the Dunai Veterinary Clinic in Kiev.

Twice completed an internship in France conducted by the Association of Specialists

Veterinary Medicine of Ukraine. In 2015, he headed the clinic “Health

animals”, Glevakha, Kiev region. Laureate of the USAVA competition ” Veterinary Doctor of 2016″.


Tatyana Khramova


She is a veterinary surgeon specializing in soft tissue surgery. The main interest in surgery lies in the field of oncosurgery, thoracic and complex abdominal surgery, wound treatment and reconstructive surgery. The principles of her work is evidence-based medicine.

Dr Khramova began her surgical experience in 2009, and since 2014, soft tissue surgery has become the main and her only specialization.

She worked in large clinics in Ukraine as a surgeon as well as head of the surgical department, since January 2019 – as a reference surgeon, and a consultant.

She is a regular listener of conferences in Ukraine and abroad. Member of USAVA (FECAVA, WSAVA), BSAVA, St. Petersburg Veterinary Society.

In 2016, she completed an internship at the surgery department of the «Belyi Klyk» veterinary clinic (Moscow).

In 2018, she received a BSAVA Travel Scholarship, which gives her the opportunity to attend the BSAVA Congress in Birmingham (April 2019). Also in 2019 she attended the congresses of FECAVA, EERVC, NVC, Purina Partners. In 2020 – International Nephrology Congress.

Dr Khramova conducts lectures and master classes in Ukraine and Moldova, including a lecturer at the largest Ukrainian congresses ASVMU and USAVA. Also translates English-speaking lecturers.

Laureate of the 2019 ASVMU award “For significant contribution to the field of veterinary medicine”.


Olga Koroleva


Doctor of veterinary medicine

Specialization: Ultrasound diagnostics and cardiology

Veterinary clinic “Drugochek”

Kharkiv, Ukraine


Sergiy Tkachenko


Chief doctor of the of veterinary clinics network ELITVET, Dnipro

Experience 25 years


Dentistry of small domestic animals and predatory wild zoo animals. Orthopedics. Traumatology. Neurosurgery.

Author of scientific articles in veterinary medicine.

Licensed specialist in hereditary diseases in dogs and cats.

Organizer and participant of veterinary conferences in Ukraine, CIS countries and Europe.

Founder of the Veterinary School of Dentistry in Ukraine


Yulia Romanishina


Scientific Communications Manager, Royal Canin, veterinary doctor, member of the European Society of Veterinary and Comparative Nutrition (ESVCN).

In 2012, she graduated with honors from the veterinary faculty of the Bila Tserkva National Agrarian University.

In 2013 she received a DAAD scholarship and was engaged in scientific work at the Institute. Friedrich Lefrer (FLI), Institute of Molecular Pathogenesis (IMP), Jena, Germany.

In 2014, she completed an internship at FLI (Jena, Germany).

Passed an intensive and advanced courses in nutrition, a course in clinical nutrition for veterinarians, from veterinary nutritionist Anna Lineva. Ph.D., Diplomate of ECVCN,

She regularly undergoes training in the field of small animal nutrition with the participation of internationally renowned nutritionists.


Sergey Bondar


Founder and Head of the Veterinary Center “Helth”, experience since 2000, in anesthesiology since 2013.


Andriy Rozumnuk

Olesya Barabash


Scientific communication manager Nestlé Purina Pet Care Ukraine.


Richard Macek


University of Veterinary Medicine and Pharmacy, Brno (Czech Republic).
After over 14 years of experience as a practicing veterinarian, brand manager and sales manager for leading veterinary companies (Bayer, Vetoquinol, Ceva), Richard successfully continued his career at Canvit sro of the Vafo concern (Prague, Czech Republic). 


Darcia Kostiuk


Head of Research Department Animal Health, in Champion Petfoods LP

Education: Dr. Kostiuk graduated from the Western College of Veterinary Medicine in Saskatoon, Saskatchewan, Canada in 2000.

Professional Pathway: Following clinical veterinary practice in Alberta with farm and domestic animals, Darcia focused her career in regulatory veterinary medicine, working for federal and provincial governments, and continued to occasionally work in clinics to support clinical skills. Darcia has worked with Champion Petfoods in areas such as the government auditor for their pet food export program, and this sparked her interest in Champion Petfoods and companion animal nutrition.

Career: Darcia joined Champion Petfoods in March 2019. Her focus is researching medicated pet foods and supporting the customer service team. She is the head of the Champion Petfoods veterinary program, which includes veterinary schools, the education of veterinary assistants.