I had people say that about my old Chi but it was just in a joking manner so it never bothered me. No one says that about Gemma, but she has been called a mouse mistakenly by a little boy, lol. He actually thought she was a mouse. :P I joke around that Gemma is just a big mouse with people who are just meeting her or when we're introducing her to someone's much larger dog, but I know she's all dog at heart.