why-animals-do-the-thing:

Please remember that you are your dog’s only advocate at the vet or in other care scenarios, such as grooming. If your pup is dog reactive and needs an appointment first thing to avoid other animals, tell them every time. If your pup is aggressive towards men and needs only female techs, tell them every time. If your pup has a high prey drive and clinic cats need to be put away before your arrival, tell them every time.

If your pet has issues that need to be worked around, you are solely responsible for communicating that. Don’t expect staff to see it in the animal’s file, remind them when you schedule. Don’t expect them to guess what they need to do because of your specific breed of dog. Remind them when you schedule, call ahead before your appointment, come inside before you bring your animal in to confirm the set up is correct.

And please, god, be polite to the people who are accommodating you. Pet care professionals will often go to a lot of effort to help your animal, so don’t take your mistakes out on them. Advocate for your pet and accept the responsibility.