This Saturday in Malcolm X Park (51st and Pine) you have the chance to see some pit bulls and other rugged (or not rugged) pooches engaged in some thrilling, macho competition. But these are pullers, not fighters.

The Lug Nuts program was designed about a dozen years ago as a way to provide competition for (mostly) young men and their dogs that didn’t involve fighting. The dogs don padded harnesses hooked to plastic sleds filled with bags of dog food and do their damdest to pull the sled. No dog is forced to pull and any dog is welcome – from the smallest of chihuahuas to the greatest of Danes. Dogs are judged by how much weight they pull as a percentage of their body weight. So that chihuahua could walk away with the whole thing.

Saturday’s program includes low-cost vaccines, low-cost microchips, low-cost spay and neuter info and runs from 11 a.m. to 3 p.m. rain or shine. The pulling competition is 1 p.m. to 3 p.m. No registration or training is required and entrants get free dog food and other gifts. The winners get cash money.

The Penn Vet Animal Welfare Society, Philadelphia Animal Welfare Society (PAWS) and Philly Lug Nuts (Facebook page) are sponsoring the event.