Locked Wandering

I think it would make a nice feature if there was a way to lock a pet to a certain spot, like when you force them to sit, but in which they are still able to wander a little bit, and seem more life-like. Rather than cramming a new pet dog into some corner of a house, they could roam around a perimeter of about 10-20 blocks around the spot their owner has interacted with them (not replacing the sit feature). 

That is all, thank you!