Mark F. Stidworthy MA VetMB PhD FRCPath FRCVS
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 Royal College of Veterinary Surgeons, 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 Michael Pawlik BSc (Zoology) DVM MVSc DACVP MRCVS
Veterinary Pathologist

Michael joined IZVG in July 2025 after 8 years at the Animal Health Centre in Abbotsford, Canada, where his caseload was predominantly fish. Following his BSc in Zoology at the University of Calgary, Michael obtained his DVM and undertook pathology residency training at the Western College of Veterinary Medicine in Saskatoon before a year as Pathology Fellow at the Bronx Zoo. Michael has participated in numerous zoological and veterinary externships including at the Marine Mammal Center in California and Vancouver Aquarium. He has been a student research assistant and pathologist member of the Canadian Cooperative Wildlife Center.

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.