My dog is 11 years old and she isn't eating as much food as she used to. She is very skinny and the only thing she will eat is human food scraps, bread, and a little wet dog food. I don't know if it's her age or something is really wrong with her. She is a sheltie collie/basenji mix if it helps to know.

What does the vet say?

I would take her to vet to check out teeth. I say that because the food you say she eats is all soft food, her teeth may be sore. That way you can also find out what food will help and maybe get the problem solved. Good luck with your girl.