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World vets logoWorld Vets provides veterinary aid in many countries throughout the world and World Vets staff and volunteers have been contributing to the CTVT sample collection since 2010. We are very grateful for their continuous support of our project!

AMRRICAMRRIC (Animal Management in Rural and Remote Indigenous Communities) is a not-for-profit charity that uses a One Health approach to coordinate veterinary and education programs in Indigenous communities. We are very fortunate that they have been supporting the CTVT project since 2009 - thank you!

VBBVets Beyond Borders is an Australian-based charity established by veterinary volunteers in 2003. It recruits volunteers and provides expertise for veterinary-based animal and public health projects in communities needing such assistance across the world. Thank you for your support of the CTVT project!

Animal Rescue Cambodia logo (web)Animal Rescue Cambodia is a non-profit organization that works tirelessly to end suffering for dogs and cats on the streets of Cambodia. We are committed to sustainable and long-lasting change in Cambodia, and work closely with local communities. Our approach includes neutering, outreach and education to improve the quality of veterinary care.

CASA organization logo horizontal new 1The CASA Association aims to improve the welfare of domestic animals as well as build upon the human-animal relationship across different contexts. We currently have a pilot project in Bali, Indonesia and hope to expand our work not only regionally but also into the protection of endangered species and supporting the communities in which they live.




Debbie Koenig is an RVT from the US and is the remote point of contact for the CTVT study. She has been a technician in small animal practice, taught as a vet tech instructor and currently works per diem for World Vets.


NataliaIgnatenkoDr Natalia Ignatenko has been a small animal practitioner in Ukraine since 1996. Over the last few years, her interest has mainly been focused on oncology and endocrinology patients. She often encounters patients with the most unexpected extra-genital locations of canine transmissible venereal tumour (CTVT). Her interest in CTVT arose from her clinical work on this transmissible cancer, especially as it is not at all similar to any other existing tumours which she regularly treats. Natalia says that she collects CTVT samples for our research project with a huge interest and we are very grateful that she has been continuously working on informing her Ukrainian colleagues about the disease both personally and at a number of congresses!


Mirjam van der WelDr Mirjam van der Wel grew up in Tanzania and graduated as a veterinarian from Utrecht University, the Netherlands, in 1999. After more than a decade in private practice (mostly in the UK) she moved to South Africa and joined the Animal Anti Cruelty League, Port Elizabeth, South Africa, in 2010. As a welfare vet, Mirjam frequently comes across CTVT cases (something she had never previously seen!). Although some animals are successfully treated, many more are put to sleep. Collecting the TVT biopsies makes this sad situation more meaningful and we are very grateful for her continuous support of our project.


JackReeceMr Jack Reece qualified as a veterinary surgeon from Liverpool University Veterinary School in 1994. After nearly 4 years in rural practice in north Devon he took a voluntary post at Help in Suffering in Jaipur, India. Despite attempts to leave he remains there where he is involved mainly in a rabies and street dog control (ABC) programme. With Indian colleagues and others he has collected data on street dog ecology, populations and the effects of the ABC programme, some of which has been formally published. Jack has participated in a number of rabies and international conferences, was an expert at the FAO Consultation and is interested in all aspects of street dog biology including TVTs. Jack has been involved in the TVT project since 2011 and we are enormously grateful for his continuous support and contribution!


Dr Sanjay Singh biog photos (2)Dr Sanjay Singh qualified from Rajasthan State Veterinary University in 2016. Apart from an initial brief spell in private practice in Delhi, he has worked as a veterinary surgeon at the animal welfare charity, Help in Suffering in Jaipur. His main professional interest is surgery, and he undertakes much of the surgical, managerial and monitoring work associated with the charity’s street dog and rabies control programme, including diagnosing and treating TVT in street dogs, and sampling cases for the Cambridge TVT Group. He also attends the charity’s rescue, private and equine cases and is happiest when operating on any species. In 2018 he undertook a study tour of UK veterinary practice and visited the TVT Group in Cambridge. He presented a paper on the Jaipur street dog work at the 3rd ICAM Dog Population Management conference in Kenya in 2019.


Mayra MartinezDr Mayra Martinez is a veterinary practitioner and researcher in Quito, Ecuador. Mayra has been a CTVT project collaborator since 2012, and she is currently working in projects related to CTVT that she hopes will unite different institutions, governments and veterinarians towards developing better methods for controlling and treating CTVT. She is also a regular volunteer in local animal shelters, where she provides veterinary support, training and lectures.


OlgaGlebovaDr Olga Glebova is a clinical pathologist from Moscow, Russia. She works in an oncology clinic and in a private laboratory that receives samples from different clinics all around Moscow and Moscow region. She is interested in the uniqueness of CTVT from the biological point of view and she loves looking at the CTVT cells under the microscope - her photos of CTVT cells are really amazing (you can have a look on our 'Home' page)!


JoseRojasGutierrezDr. José Rojas Gutiérrez is a dedicated private practice veterinarian since 2006. He owns the veterinary center  "Clinica Veterinaria Dr José Rojas" in Los Andes city, Chile. Dr Rojas has been our collaborator since 2012 and in his own words he says "I'm proud to contribute to this amazing research and with this incredible experience. In Chile we have a lot of TVT cases because we have many dogs in the streets without owners, which is the main problem. The Clínica Veterinaria Dr. José Rojas aims to give advice to the owners and encourages spaying/neutering with the idea to control the dog population to reduce the prevalence of CTVT and other diseases."


Karter NealDr Karter Neal is a general practitioner at the Santa Cruz Veterinary Clinic, Tucson, Arizona. Her experience is in equine medicine, general practice and in shelter medicine. Dr. Neal’s passion involves offering access to low cost care to pet owners. She is active with Soul Dog Rescue in the Four Corners region, volunteering at high volume spay and neuter clinics twice a year on the Navajo Reservation, as well as volunteering her spay/neuter services for the Hopkins Belize Humane Society in the Stann Creek district in Belize once a year.


VitalaruAssistant Professor Bogdan Alexandru Vitalaru graduated from the Faculty of Veterinary Medicine of Bucharest in 2004, and he received his PhD in October 2009. Since January 2008, he is a University Assistant and from January 2016 Assistant Professor at the Faculty of Veterinary Medicine of Bucharest. Over the years he has participated in numerous scientific seminars and conferences and wrote more than 60 ISI and BDI scientific papers on topics related to breeding pathology, biotechnology in breeding, oncologic surgery, dialysis and hemodialysis. In 2012 he established Romanian Society of Minimal Invassive Veterinary Surgery.


Dr. Veronika Kravtcova qualified as a small animal doctor from Saint Petersburg Academy of Veterinary Medicine in 2005. She is  a veterinary practitioner specializing in small animal oncology in a private clinic. She has been the chief doctor of the clinic for six years. Over the years he has participated in numerous scientific and practical seminars and conferences. She has some published works on oncology (AGRIS). She is members of the Institute of Comparative Oncology (bioirso) and the Russian Board of veterinary oncologists.


Dr. Rodrigo Horta

Dr. Rodrigo Horta is a dedicated veterinary surgeon and oncologist since 2010. He is a professor of the Department of Veterinary Medicine and Surgery in the Universidade Federal de Minas Gerais, Brazil.  He did part of his doctorship in the University of Cambridge and is very proud to collaborate with the university and the CTVT study. "It´s been a lifetime experience". He is interested in biological behaviour and treatment of neoplasms, including  the remarkable natural transmissible cancers.


 CROPPED sevil vural 5x5 bio 02Professor Doctor Sevil Atalay Vural, I graduated from the Faculty of Veterinary Medicine of Ankara University, in 1992; I received my PhD in  June 1997 (about Rabies at dogs), Assistant Professor in April 2002, and Professor Doctor in 2008.  Over the years I have participated in numerous scientific and practical seminars and conferences. I have a lots published more than 100 articles on topics related to oncology, and infectious diseases. I am also an auditor of the Republic of Turkey Ministry of Foreign Affairs Turkish Accreditation Agency.



Dr. Samuel Felix

Dr Samuel Uchenna Felix, a native of Abia State in Nigeria. Born and grew up in Kaduna State, Nigeria. I graduated as the best graduating veterinary surgeon at Ahmadu Bello University, Zaria, Nigeria in 2011. I began general practice of both small and large animal (ruminants) between 2012-2013. I received my MSc degree in Theriogenology ( Veterinary obstetrics and andrology) in 2017 from Ahmadu Bello University, Zaria, Nigeria. I am employed as a researcher and lecturerer with National Animal Production Research Institute, Ahmadu Bello University, Zaria, Nigera in 2014. I am profusely involve in researches on animal reproduction and reproductive endocrinology particularly of donkeys. I am also involves in reproductive surgeries and management of domestic animals. I am currently running my PhD (Theriogenology) on Circadian endocrinology of different age groups of  donkeys in different seasons in Nigeria (at Ahmadu Bello University) and also I am a Fellowship student with the College of Veterinary Surgeon of Nigeria. I have participated in a number of conferences and seminar, and also have a number of published articles in peered review journal in areas of animal reproduction. My interest is reproductive biotechnology, reproductive disease management and endocrinology.



PLEASE NOTE: We are still in the process of updating the 'collaborators' page, so if you are our collaborator and you are not listed on this page yet, please, let us know!

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