CowBella said:
treat ball CHECK Kongs are Kool
tennis ball ONLY IF IT IS THE SUPER BIG 'TENNIS' BALLS. NORMAL BALLS CAN AND HAVE LODGED IN THE BACK OF THE THROAT AND SUFFOCATED THE DOG. I have tennis balls that are 6"
That is an interesting point about tennis balls, I have never had this problem but it seems like it could happen and would be pretty devastating!!

Guess I wouldn't know because my dogs usually "kill" tennis balls within the 1st 2 minutes of having them.
But I would like to make a safety point about Kongs. These can be very dangerous (if you own a Pit Bull) being that they are not chew proof. Dogs could possibly choke on the chewed up pieces and die or could eat them. If they eat them they MIGHT pass them without harm but could also cause a deadly blockage, this happened to at least one Pit that I know of and he almost died from it as they (the vets) couldn't at first find what the problem was when he was acting sickly and skinny. The surgery to remove the kong parts was very expensive and he also then almost died of infection.
Well any toy you give your Pit Bull you will need to watch them because they can chew up just about anything, concrete and steel included. So to prevent choking or blockage you will want to keep an eye on them. Mine also like to shread the rope toys they love doing that, one they just detroyed was a rope toy with a tennis ball on one part and a tennis ball type material ring they live to rip them apart. They also rip open the stuffed toys and take out all the filling. They don't get these type anyway because the squekers pose a choking hazards. Also I'd be weary of toys that even say Pit Bull Proof or Pit Bull Tested this is how ours ended up.
She was unsupervised with it because it was supposed to be chew proof and even talked to the makers who assured that it was also chew proof for Pit Bulls. It also says "Pit Bull Tested" on the package. She was given it unsupervised to give her something to play with while being home alone, a mistake that could have been deadly, luckily it was not. They will be giving us a refund once we send it back. Good thing it didn't kill our dog, she did this the first couple hours left alone with it.