I’m a dog lover from way back and have had two dogs and three cats. Because I was always poor I only had one at a time. Volunteered at animal shelters too. Mostly cats. But I say caution with certain breeds is very good. When I was young there wasn’t any pits like there is now. And bad dog owners are the worse. Working for a vet you’ll have all kinds of experience and you’ll get more confidence as you gain experience. But I think most dogs at the vet will have good owners. Those you are encountering on the trail sound like they best be avoided.

Best of luck in your new career. Sounds like vocational rehabilitation is listening to you. I have a cousin who’s a vet tech she loves her job and has been doing it for ohhh 20 yrs or so.