Dr. Arroyo grew up on a rural farm along the pacific coast of Costa Rica. At the Universidad Nacional-Heredia, he trained as a veterinarian until he received his Lic. Med. Vet. in 1994. For the next few years, he practiced mixed animal medicine in rural Costa Rica. After gaining years of clinical experience, Dr. Arroyo decided to attend the Ontario Veterinary College (OVC) in Guelph, ON where he completed the large animal medicine Doctor of Veterinary Science (DVSc) program in the Department of Clinical Studies. Following his completion, he furthered his education by working towards a PhD in the Department of Pathobiology at OVC.  

Dr. Arroyo is now board certified in large animal medicine with the American College of Veterinary Internal Medicine and has been a faculty member in the Department of Clinical studies since 2009. 

His research interest is in large animal gastrointestinal disorders but, more recently, he has grown fond of equine vascular diseases with a focus on arteriosclerosis of the pulmonary artery of racehorses. 

Gary graduated from US Davis , and went on to undertake internships at Texas A & M University and a residency at UC Davis. Gary is a diplomate ACVIM ACVECC and ACVCP.

He currently holds the position of Professor of Veterinary Medicine at UC Davis. He has clinical interests in neonatology alongside research interests in neonatology and critical care, fluid balance, and has contributed to/published in excess of 130 papers.

Tina Holberg Pihl currently works at the Department of Veterinary Clinical Sciences, University of Copenhagen. Tina does research in equine colic and the use of biomarkers for improved diagnosis and prognosis estimation. Her current focus is on the gastrointestinal parasite strongylus vulgaris and its relation to equine colic.

Sarah graduated from the University of Cambridge before undertaking an internship at Valley Equine Hospital in Lambourn, where she developed a love of foal medicine and youngstock care.

She then worked as an ambulatory vet in Sussex before joining the Royal Veterinary College as a resident in equine medicine. Whilst at the Royal Veterinary College, she undertook research into testing for insulin dysregulation and also into the impact of maternal obesity on the development of Thoroughbred foals.

In 2015 Sarah became a Diplomate of the American College of Veterinary Internal Medicine and worked as an equine medicine specialist at Rossdales Equine Hospital, in Newmarket, before joining the Equine Referral Hospital at Langford Vets in May 2017.

She is interested in all aspects of equine medicine but particularly in neonatology/stud farm medicine, neurology and cardiology. In her spare time she runs - spurred on by her german shorthaired pointer - and is attempting her first triathlon.