Suffolk County SPCA Chief Roy Gross says one of the cats is pregnant, and another is nursing five kittens.
He says two kittens needed emergency surgery. Others were being treated for eye and respiratory infections.
They were rescued Wednesday in Centereach.
Donations can be sent to the Suffolk County SPCA, 363 Rt. 111, Smithtown, New York 11787. For adoption information, call 631-382-SPCA.