Veterinary assistants typically work in a clinic under the supervision of a veterinarian alongside a vet technician or a vet technologist. Any experience in a technical or clinical setting will help you to get use to your new work environment. What are some things you would expect to experience in such a setting? Your customers will be in much different states of mind than in a bar setting. Some may be frantic and emotional. Animals will be smelly, dirty and loud. You will need to be cautious of infectious diseases and be prepared to see animals in disturbing form. It's a different type of stress. Don't feel pressured by this question if you don't have this type of experience! For a vet assistant, it is typically not required, but always helpful.