Heck, it would be a great idea even after acquiring the pet. I have medical nagging doubts about our kittens, that is not knowing enough to be able to ask questions. We talked with the vet tech (is that the right term) when we brought them in for breaking, but didn't talk with the doctor other than to say hi. It is a tough information download though.

As to legal responsibility, if you give advice in the negative, you should avoid most of that. "I wouldn't recommend a greyhound for your efficiency apartment."