I work at a pet store... It's a small & local. The store is clean. Everyday each herp gets removed from it's cage, the carpets are changed, water is exchanged, they are fed and checked up, and glass is cleaned.
I care. I spend my freetime reading about the animals we carry...and caring for my own.
You know who really doesn't care? The customers. I can't tell you how many times people have killed their animals and cared less.
There are expetions to the customers. And the pet stores as well.
In response to the question, I have never seen any classes available. But each employee is taught the basics of any animal it doesn't know much about. ( I knew nothing about the birds, for example. )