We had to leave Grizzly at the vet for a week while we were out of town, and they were responsible for feeding him his antibiotic while we were gone. When we got back, I asked them how much trouble he gave them, because he always struggles for us. They said he was perfectly calm! They were even able to do it with just one person.
I think he was just scared stiff with them. But with us he was comfortable enough to complain.