Hallowell EMC provides ventilatory support for animals of all sizes. The Anesthesia WorkStation: rats, pocket pets, rabbits, avian, reptiles, cats, and small dogs. Model 2002PRO—with 3 interchangeable tops: rabbits, dogs, cats, sheep and foals. Tafonius and Tafonius Junior: big dogs to horses and other large animals. Proudly serving the veterinary industry for 30 years.