We have 2 Pit-Bulls and a Pit-Vizsla mix. They tear apart even the big black Konga balls, especially the Pit-Vizsla.

Btw, the Pit-Vizsla has mostly the head if a pit, but the rest if him is Vizsla. Boy can that dog run. He tears around the yard at high speed, turning on a dime, and leaping like a deer. He's quite amazing and his coat is so cool with all the mixture of colors that from a distance look like solid red.