The solution for supplying both gas anesthetic delivery and ventilatory support for pocket pets, avian, exotics and laboratory animal applications in one easy to use package: The Hallowell EMC Anesthesia WorkStation. A compact (9"? x 9"? x 15"? h), portable (15lb.), convenient, circle system for use on animals under 7 kg (15 lb.). The AWS has proven itself to be well suited for both short and long term anesthetic procedures with animals ranging in weight from about 150 grams to 6 or 7 kilograms. In procedures with these small animals the AWS has been used for mask inductions and the subsequent maintenance of spontaneously breathing masked or intubated patients as well as providing ventilatory support for the intubated patient for minutes or days at a time. Throughout these procedures the AWS, with any precision vaporizer, has been shown to facilitate the administration of gas anesthetics, holding the subject in a very smooth controlled anesthetic plane while providing precise respiratory support. The AWS is currently being used on as diverse species as rabbits, turtles, tamarin monkeys, woodchucks, crows, CooperTMs hawks, various ducks, Canada goose, snakes, rats, ferrets, owls and even the cat and dog. The Hallowell EMC Anesthesia WorkStation is easy to use as BOTH a basic respirator (irrespective of anesthetic regimen, gas or injectable) and delivery source for inhalant anesthetics. It incorporates a time-cycled volume ventilator with an adjustable pressure safety limit. The only additional component necessary for immediate utilization is a vaporizer for the agent of your choice.