Dr. Johnson graduated from The Ohio State University College of Veterinary Medicine in 1987 and pursued a Residency in Small Animal Medicine and Master of Science at the University of Illinois before doing a post-doctoral Fellowship in Radiation Oncology at Colorado State University. She was previously Professor in the department of medicine and epidemiology at UCD, with a special interest in canine and feline respiratory conditions, and has authored two textbooks on the subject.

Sarah graduated from the University of Veterinary Medicine Hannover, Germany, and performed her doctoral thesis on retinal degenerative diseases at RWTH Aachen and the University of Veterinary Medicine Hannover. After working in a private veterinary clinic, she joined Leipzig University’s Ear, Nose, and Throat (ENT) unit led by Prof. Oechtering within the Small Animal Department at the Faculty of Veterinary Medicine. She earned the German titles of "Veterinarian for Small Animals" (Fachtierarzt für Kleintiere) and an additional German specialization in Ear, Nose, and Throat diseases in dogs and cats. After six years and being senior clinician in the ENT unit at Leipzig University, Germany, she pursued a residency in internal medicine at the University of Veterinary Medicine Hannover, becoming a Diplomate of the European College in 2025. Following her residency, she took up a position as a specialist in internal medicine at Ghent University in Belgium. In 2024, she initiated the foundation of a working group for veterinarians interested in ENT diseases within the DVG (Deutsche Veterinärmedizinische Gesellschaft) in Germany.

Sarah has published several clinical articles in peer-reviewed veterinary journals and has lectures at national and international conferences with special interest in Respiratory and Ear, Nose, and Throat diseases in dogs and cats.

Dr. Schwarz studied veterinary medicine at the Humboldt and Free University of Berlin in Germany.

He did a diagnostic imaging residency at Glasgow University Veterinary School and became a Diplomate in Diagnostic Imaging with the RCVS (DVR), ECVDI and ACVR. He has been an academic radiologist at the Universities of Pennsylvania and Wisconsin-Madison and is the head of the Diagnostic Imaging Service at the Royal (Dick) School of Veterinary Studies since 2009.

In 2017, he was elected as a Fellow of the Royal College of Veterinary Surgeons (FRCVS) in the UK. He has published over 100 peer-reviewed articles and his particular interests are in thoracic imaging and computed tomography. On both topics he has published a comprehensive textbook.