Canines are carnivores.
They need protein.
They will eat almost anything but they need protein.
Cereal based food is not good for them.
My dufus will eat chili peppers or onions, but he craves meat, particularly fish.
He likes birds too.
I think he likes squirrels but he has never caught one yet LOL
Onions can be toxic to dogs, there’s a chemical in it which can lead to kidney failure.
The local squirrels learned to head up the nearest tree as soon as they saw her.
Alas, she is getting a little long in the tooth now (she's 12) and can't quite mange this trick anymore. Still chases and barks at them, though.