From what I can see around me, my friends' dogs have very nice lives

If you constantly give your dogs snacks, the dog will be unhappy constantly too. If you give your dog just two meals each day (breakfast and dinner, and nothing more), your dog will be happier.

I feed my dogs better than I feed myself.

According to a human.

Both perceptions can be true at once.

Sheltie or rough collie?

I've got a sheltie myself, everyone loves the little goober