Veterinarian assistants, or vet assistants, help veterinarians and veterinarian technicians in animal care hospitals, animal clinics, or other veterinary facilities. As a veterinarian assistant, you feed, bathe, and exercise animals in your care. Veterinarian assistants also restrain animals when the vet examines or treats them. Other responsibilities may include cleaning and sterilizing exam and surgical rooms and equipment, greeting pet owners when they enter the office, and organizing files. Some veterinarian assistant positions require you to perform lab work, such as drawing blood from animals, collecting urine samples, and administering medication under the supervision of the primary veterinarian or technician.