PHILADELPHIA – Animal welfare workers fear they may never know who skinned 11 puppies before dumping them near a public park – or, more importantly, why they did it.

DNA tests will be done to determine if the puppies are dogs, coyotes or some other domestic or wild animal, while necropsies will be conducted to learn how they died.

A woman walking her dog found the bodies Friday in woods near a park in Lower Macungie Township, outside Allentown, the Lehigh County Humane Society said. The bodies were in or near a bag that had been torn open, perhaps by an animal.