infinite : bubblegum
My dog was a sled dog mix and we could not keep her inside at all because she had too much energy. Even in the winter when it was -40; she'd sleep indoor in our garage at night but during the day she had to be outside or else she'd go crazy and pee everywhere (my bedroom was her favourite spot). She had the entire backyard as hers, and her doghouse was under the deck right next to the oil heater so I'd say she was pretty good. And thankfully she wasn't a jumper, so we didn't have to chain her too like most sled dogs.