I never did see a dog that could unwrap itself from the pole it was tied to after it had wrapped itself around the pole. They just sit there and look puzzled wondering why they can't move as far from the pole as they had just done a few minutes before. If they find the dog that can unwrap itself, then I might start believing in canine calculus.
I agree with that. We had a dog that used to catch squirrels who strayed too far from their tree. The dog would lie and wait until the squirrel reached a predetermined distance and the dog would launch, not at the squirrel but at the tree and would usually nab the returning squirrel. Was that calculus?
I have a mutt dog (part Sheltie, I was told) that can unwrap itself from a pole. I never would have believed it myself until I saw it, because in order to do this, the dog has to deliberately go in the opposite direction of where his instincts want to take him, and not just once, but over and over until he's free. You can tell by looking that it's an effort for him, but he keeps on going until he's loose.