Mark F. Stidworthy MA VetMB PhD FRCPath MRCVS
RCVS Recognised Specialist in Veterinary Pathology (Zoo and Wildlife)
Principal Veterinary Pathologist

Mark is a full-time consultant anatomic veterinary pathologist working with zoo, exotic and wildlife species including fish, at International Zoo Veterinary Group (IZVG) in Keighley, West Yorkshire. A 1996 University of Cambridge veterinary graduate, with pathology residency training from Liverpool Veterinary School and a Cambridge PhD investigating remyelination in the central nervous system, he joined IZVG in 2003. He is a Fellow of the Royal College of Pathologists and an RCVS Recognised Specialist in Veterinary Pathology (Zoo and Wildlife). Mark was President of the British Veterinary Zoological Society between 2015 and 2017. He is an author or co-author of over 80 peer-reviewed publications and speaks regularly in the field of zoo, wildlife and aquatic pathology.

Dr Andrew F. Rich BVSc DiplECVP AFHEA MRCVS
EBVS® European Specialist in Veterinary Pathology

Andy joined IZVG Pathology as a board-certified veterinary anatomic pathologist in January 2022. He graduated from Liverpool Vet School (BVSc, 2016) after completing an exotic animal medicine internship, and worked as a clinician (equine and small/exotic animal) in Scotland prior to completing his pathology residency (Liverpool). His residency training included aquatic, zoological and exotic pet pathology, veterinary forensic pathology plus small/large animal diagnostic pathology. He also taught on the BSc (Hons) Veterinary Conservation Medicine course at Liverpool. In 2021, he became a Diplomate of the European College of Veterinary Pathologists (by examination, at first attempt). Prior to IZVG, he volunteered as a wildlife clinician and pathologist at a wildlife hospital in Gloucestershire, whilst working for a private UK diagnostic pathology lab, where he was responsible for zoo and exotic animal cases. He continues to publish peer-reviewed articles in the field of aquatic, zoo, wildlife and exotic animal pathology and present research at national and international conferences. He is keen to work with clinicians to research and develop prognostic criteria for various diseases (e.g., neoplasia), alongside undertaking retrospective reviews to identify the most common forms of diseases in currently less-studied species.

Cheryl Sangster BSc DVM MVSc DACVP MRCVS
Veterinary Pathologist

Cheryl works regularly for IZVG Pathology. Her BSc in Marine Biology and DVM were followed by an MVSc in Anatomic Pathology at the Canadian Wildlife Health Centre. After gaining DipACVP Cheryl spent over 7 years as Diagnostic Veterinary Pathologist at Taronga Zoo in Sydney, before pursuing a freelance career.