"Porky" was stabbed to death early Oct. 22 in an attack by two men and their dogs, the society said.

The group, in a letter issued today to Carlisle said it is concerned "because of the apparent callous, gratuitously cruel nature of the killing, magnified by the fact that the men were apparently unaffected by the screams of witnesses begging them to stop the massacre."

"The seeming malice with which the killing was carried out, heedless of its effects on Porky's family members, is particularly troublesome and speaks to a disturbing propensity toward violence that we fear may carry over to affect people as well, given the well-proven connection between cruelty to animals and violence against people," said Dale Bartlett, the society's national deputy manager of animal cruelty issues.

He urged Carlisle to seek significant jail time and psychological counseling in the event the men responsible are successfully prosecuted for violating the state's animal cruelty law. Jim Fulton, spokesman for the prosecutor's office, said today that one suspect has been identified and the office is looking at filing charges at the appropriate time.