what is a teddybear breed?

I have been reading all the threads about dog food and thier ingredients & im lost what should i be feeding princess who is 7 yrs old pitt/lab mix, she is a notorious finicky eater suggestions on what i should i be lookin ...

I just found out about flint river has anybody used this? plus my dog is a choicey eater, now all of a sudden she only wants can food.