I can't seem to figure Nala's breed. I'm sorry for the crappy pic but I only have a cheap camera phone to take pics with. My guess on her breed is some type of Terrier mix?
Its a guessing game. Could be practically anything in there. If the parents were mutts as well, the original breed make up is almost impossible to tell.
You can say what it is not, but you cant really say what it is.