Police have warned people to be vigilant with their pets after 17 dogs, including 13 puppies were stolen.
They were taken from from Fiveways Boarding Kennels and Cattery in Barton Mills, Suffolk on Thursday between 15:45 and 19:10 GMT.
The dogs included six, five-week-old Labrador puppies, seven Lhasa apso puppies and four older dogs.
Police warned that criminal gangs were targeting homes with dogs, often to use in breeding.
The stolen dogs were:
- One female, black-and-white-coloured Lhasa apso
- One female, honey-and-white-coloured Lhasa apso
- Seven Lhasa apso puppies - one honey-coloured, three black-and-white-coloured males, two black-and-white-coloured females
- Six, five-week-old Labrador puppies - two yellow-coloured males, two black-coloured males and two black-coloured females
- One three-year-old, chocolate-coloured, working cocker spaniel female
- One grey and white cockapoo aged between two and three-years-old
Another cocker spaniel was stolen from the garden of a farm in Holywell Row on 6 July and police said they were not ruling out a connection to the kennel thefts.
Rural crime sergeant, Brian Calver, said: "Organised crime groups are actively targeting addresses, with working breeds tending to be those favoured by criminals.
"The loss of any pet can be devastating, with the added trauma of not knowing what sort of conditions the dog is being subjected to. We would advise dog owners to review security of any outdoor kennels.
"Consider your security on social media and avoid giving away details that may highlight your address and the fact you have a dog which could be attractive to thieves."
He also advised people to review garden security and not to leave dogs unsecured outside if there is no one home.
Dog owners have also been advised to ensure their dog is chipped and, if neutered, mark the dog's tag as such as this makes them less attractive to thieves that may want to steal them for breeding.