I think our dog is broken. Sometimes I have to almost drag him out of the house for walks, especially at night, and even then he'll often just turn around and head back inside without doing anything. He also sometimes skips meals.

There's nothing wrong with him; we take him to the vet annually (at least) and have mentioned the food thing, so they suggested we cut back a bit, but he still does it. He's definitely not overweight - he's a perfect weight for his size.

I think he's just content and doesn't want to move unless he has to.