A pair of vicious pit bulls have terrorized a Coney Island building for months, killing one innocent pup and mangling two more, outraged pet owners said Wednesday.

The latest attack took place Sunday morning when a French bulldog, Calypso, had just gotten back to Coney Island Commons — and one of the pit bulls snatched the tiny dog in its mouth and made it go limp.

“It grabbed her by the head and shook her around like a rabbit,” owner Diane Bradley, 56, recalled to The Post.

“I was pulling on the leash so hard to get Calypso out of his mouth that the leash just snapped. I fell to the floor. That’s when I begged the porter to go get my husband.”

Bradley’s spouse, Derrick, jumped into action as the pit bulls’ owner also tried to stop his savage dogs’ attack. Derrick, 58, said he pulled o

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