Almost all of the cats and kittens required medical care.
Inspectorate team leader of the north-east Michelle Green said the conditions the animals were living in were deplorable.
“Eleven cats were seized immediately by inspectors and a warrant was obtained and executed the following day to seize the remaining animals,” Ms Green said.
“It’s only through receiving information from a member of the community we discovered animals living in these conditions and were able to get them the care they need.”
Confining an animal in a way that either causes or is likely to cause pain or suffering is a criminal offence that carries fines of up to $46,230 or 12 months’ imprisonment.
Ms Green said the case highlighted what inspectors were seeing when responding to cruelty complaints.
“There has been an increase in cases of animals housed in very poor conditions, often resulting in health issues for the animals,” Ms Green said.
“Pet owners are required to ensure they provide a clean and sanitary environment and meet all the legal obligations that come with responsible pet ownership, such as the provision of food, water, shelter and veterinary attention.
“It’s also vitally important to consider the number of animals you can legally own and are able to provide adequate care for.”
Anyone with concerns for the welfare of an animal is encouraged to contact RSPCA Victoria on 9224 2222 or submit a report at rspcavic.org/cruelty-report/