Crackers is a rescue dog who's a bit on the nervous side, but pretty comfy at home with Butter, a very plump cat who--like all cats--is all about himself. The two pets have a good life: big backyard, nice couch, good eats, and an owner who goes to work every day so they can pretty much do what they want. Enter Peanut, a brand-new puppy with big floppy ears, unabashed energy, and no appreciation for the quiet life. The little dog is a chowhound who...