I'd say, in general, that pharmacists are a pretty intelligent group. But, there are some things we don't know (and I for one, freely admit to what I don't know). Stuff that they didn't teach us in pharmacy school. Veterinary medicine is one of these things.
I know of some pretty good websites for info, and just as a pet owner (four lovely four-legged "fur kids") there are things I have learned from my own vet. But it never ceases to amaze me when a customer gets all pissy because I can't tell them how to treat their animal and refer them to a vet instead.
Yesterday, a man comes up and asks what to give his dog for diarrhea. Well, there can be many causes of diarrhea in dogs (just as in humans), and since animals metabolize drugs differently than people, I suggest to him to see his vet for evaluation and treatment. He yells at me about how he refuses to pay 150 bucks to treat a case of diarrhea. Then he goes to the section with the diarrhea meds (I like to call it the butt and gut aisle) and spends about 15 minutes looking at stuff, picks a product and leaves.
Even though I am a real animal lover - did I already mention my own 4 pets?- I halfway hoped he had picked something that would kill his poor little pooch just to put the thing out of the misery of having an idiot owner.
Note to customers - If the pharmacist says they don't know, and refers you to a doctor or vet, don't be an idiot and just decide on your own what to do!