I don't think this is a dumb question. I do think it's a funny question. I've sometimes wondered if I would be able to tell my pet from a similar looking animal, and I've had to admit that I'm not certain that I could. Fortunately, I don't have a similar looking animal, but I sympathize with your plight. I'm pretty sure Boger's suggestion wouldn't work for me. I have a terrible memory for that kind of thing. I can't remember names or faces either. I'll be interested to see what you come up with.