You could easily be describing most farm dogs. I think dogs having a small run and a kennel, where they spend most of there time, and getting to go for regular runs is just fine.

I don't. I would never treat my dog this way. Dogs are pack animals, they don't like being alone. Dogs need to pee and poop and won't do it in the kennel so they have to hold it for hours before they are let out. Dogs need mental stimulation and if left alone in a cage long enough will start gnawing on the wire and ruin their teeth.

I would never leave my dog alone more than a couple of hours and even then I leave him inside the house where he can roam around and play with his toys if he wants.

BTW I also think it's disgusting how pigs are treated especially the ones kept in farrowing crates. Pigs are intelligent creatures why not let them have a decent life before you kill them in their youth.