A dead dog chained to a cement block was pulled out of a West Islip canal Thursday morning, prompting an SPCA investigation, authorities said.
A resident on Secatogue Lane East found what appears to be a female Rottweiler mix in the canal behind his home before 10 a.m., said Roy Gross, chief of the Suffolk County Society for the Prevention of Cruelty to Animals.
The dog may have died within the past five days, he said. Its bloated carcass appeared to be about 7 years old and was black and tan, he said.
Workers from the Islip Town animal shelter retrieved the body from the water, Gross said, and a necropsy was done Thursday to determine whether the dog was dead or alive when it wound up in the water.
"If the dog drowned, then we're looking at a felony criminal investigation," the SPCA chief said. "I'm just hoping that the dog was dead. It would be very disturbing to find the dog was put in there alive."
A preliminary inspection did not reveal any obvious trauma or abuse, Gross said.
He said town officials are looking at whether any code or environmental law was violated if the dog was dead and then dumped into the canal.
Anyone with information may call the SPCA at 631-382-7722.