I don't mind if someone says, "I'm sorry, I don't know the answer to that--let me get someone who does/direct you to a book that will have the information". What is it with people who can't just say "I don't know"? How hard is that?
Giving out spurious information to make themselves look knowledgeable when they aren't is just plain damaging, and honestly, it makes them a terrible person. I can't imagine someone doing that, knowing that an animal could die as a result of their uncertain information. If they don't realize that it's serious...then they're not bright enough to be doing the job they're doing. Minimum wage or no. They should be put into a position where they don't talk to customers.