Most dogs that react aggressively at the animal hospital are actually anxious or frightened. Do you really want Harley to feel stressed when he could instead feel confident and happy when he visits his veterinarian?
Moreover, if a trip to the vet is so stressful that you don’t take him regularly, then he’s not getting the preventive care that could spare him serious illness.
What happens if Harley needs surgery or gets sick enough to require hospitalization? He should feel comfortable having people treat his condition, give him medications, and tend to his IV fluids. If he won’t let the veterinary staff provide the necessary care, he won’t heal.
If those aren’t enough reasons, let me share some statistics. Ninety-two percent of veterinarians have been bitten by a dog, and although I assume Harley hasn’t bitten his veterinarian yet, I’m certain you don’t want that bad mark on his medical record.
Furthermore, the primary reason dogs are relinquished to shelters is behavior problems. Vow to address Harley’s so you'll never have to think about giving him up.
Since there’s no evidence that dogs grow out of behavior problems on their own, let’s talk about what you can do to correct Harley’s aggressive behavior at the animal hospital.
First, take your vet’s advice to consult with a veterinarian who specializes in animal behavior. Ask whether an anti-anxiety medication would help, at least during the initial phases of therapy.
Train Harley to enjoy riding in the car, so he’s relaxed when he reaches the animal hospital. Drive him to places where he can have fun and meet friendly people and dogs, making very few of his destinations stressful.
Also, train Harley to accept common veterinary procedures. Start with the physical examination, ensuring he is comfortable having one person hold him while another checks his teeth and gums, ears, paws, and elsewhere. Practice having someone hold his front leg out in front of him, as though a veterinary technician were drawing blood.
Enroll Harley in a group obedience training class. He'll become comfortable with other people and dogs, and his self-confidence will improve as he performs new skills and hears your praise.
With some work and perhaps medication, both Harley and you will come to enjoy his veterinary visits.