Cops responding to a tip from an animal-rescue group on Sunday walked into a sickening scene in a Brooklyn basement apartment: more than two dozen emaciated and neglected pets.

There were 22 cats, six dogs, two ducks, a pig and a turtle — most of them neglected — at the Bensonhurst residence, police said.

The American Alliance for Protection of Animals informed cops about the horrific situation after its members went to the site Saturday, police said.

The group said it found two dead cats and three dead turtles among the menagerie of live critters.

“When our AAPA rescue team arrived to the scene, to say that they were shocked by what they saw is to say nothing at all,” the group posted on its Facebook page. “The moment our rescuers opened the door to the basement, they were choked with … ammonia coming from all the feces and all those poor animals that were forced to live in their own excrements.”

But when the rescue workers returned with cops Sunday, the dead animals had been thrown away “by unknown means,” although the neglected live ones remained, police said.

No charges have been filed, but Stanislav Baev, an AAPA representative, said the remaining animals were then taken away and sent to various undisclosed locations.

The apartment in the basement of the two-story, red-brick home is occupied by a couple in their mid-40s and their 15-year-old son, who was taken to a local hospital for medical examination.

A woman at the home Monday, who would not identify herself, said she also runs a day-care center at the location. She said the AAPA was looking for contributions before dropping a dime on her.

“Everything is gone,” she said. “The animal place, they’re terrible. They say for the love of animals, meanwhile they rob money. When you’re asking for large amounts of money like that, you’re robbing people.”

Additional reporting by Daniel Cassady