Carbon County deputies seized 58 dogs and puppies from a suspected puppy mill at a home on Tuesday, Sheriff Josh McQuillan announced Friday.
The home is located in Roberts, about midway between Laurel and Red Lodge.
The dogs were being bred for sale and were taken after law enforcement officers obtained a search warrant related to animal cruelty and other charges.
In a news release, McQuillan did not identify the resident, nor indicate whether anyone has been arrested in connection with the case.
The dogs are Cavalier King Charles Spaniels, a popular "toy" breed, and were being held in extremely crowded and filthy conditions in the house, according to McQuillan.
They include mothers, puppies, intact males, and pregnant dogs, two near giving birth.
The Beartooth Humane Alliance is organizing care of the dogs.
The dogs received vet exams and will to be moved to a location for care and attention during the case, McQuillan said.
The Beartooth Humane Alliance is accepting donations to help with caring for the dogs, including food and cleaning supplies and maintaining their space.
Donations can be made to the Beartooth Humane Alliance, P.O. Box 2333, Red Lodge, Montana 59068. The alliance requests writing "Dog Rescue" on the memo line.