Authorities are investigating whether any of the more than 20 animal carcasses found in the backyard of a Long Island home are the remains of animals reported missing by pet owners in the area.

Dozens of concerned pet owners have contacted authorities following the gruesome discovery, a scene described by one veteran SPCA official as something out of a horror movie.

In addition to the dead animals, five dogs and a cat were found alive, suffering from maltreatment, inside cramped cages in a room of the house, said Roy Gross, chief of the Suffolk County SPCA.

Sharon McDonough, 43, of Selden, was released without bail following her arrest on Saturday on six counts of animal cruelty involving the dogs and cat. An investigation is proceeding into whether any animals found dead in the woman's backyard had been mistreated; additional charges were possible.

Gross said the SPCA has received "dozens of calls" from pet owners who say their animals went missing in the area. He said the district attorney could file larceny or other charges if the investigation reveals that animals had been stolen.

Prosecutors said McDonough was represented at her arraignment by an attorney from Legal Aid, which has a policy of not commenting on pending cases. She faces up to a year in jail if convicted on the current misdemeanor animal cruelty cases, but could face 2 years in prison if upgraded felony charges are filed, Gross said.

McDonough is due back in court Tuesday.

The dogs and cat found inside McDonough's home were all legitimately purchased, Gross said. Continued...