The SPCA has rescued about 180 cats from an Auckland home living in filthy conditions.
Chief executive Andrea Midgen said some of the cats were being kept in very small cages, some did not have access to food or water and the owner did not know how many cats were on the property.
"There was a lot of filth, a lot of faeces. The ammonia count was at alarm levels," she said.
Ms Midgen said the SPCA had visited the residential property a few times as a result of complaints, but would not say where it was or give any details about who was keeping the cats.
About 15 SPCA staff, including most of the dog staff, have been assessing the cats since they were removed from the property yesterday(Thursday).