I find it really odd how small my Chihuahua is in comparison to others that I see. When I took her to the vet yesterday, she weighed five pounds. There was a male Chihuahua in the waiting area also, and he weighed fourteen pounds! Do the weights vary that much, or perhaps the other dog was not purebred. I know that Chili is a purebred Chihuahua. I'm starting to think maybe I should be feeding her more!