I have six pups from the litter all of them show potential and four of them are really something. It looks like a square pen works too. How small is too small when it comes to a training pen?
my pen isn't bigger than 1000 sq ft. But mine is also just a repurposed cattle feeding pen. Now my uncle has a 10 acre pen that's a big triangle wooded swamp land and he keeps anywhere from 5 to 20 hogs in there at a time. That's a real training pen not just a little bay pen like mine. Dogs actually have to go find the pig first