A new investigation has documented widespread suffering in puppy mills across China.
Footage recorded by animal rights charity PETA Asia shows 'dogs and puppies confined to filthy cages barely larger than their own bodies'.
According to PETA: " Dogs barked frantically and stuck their noses through the cage wires to try to escape from the build-up of their own waste.
"Many of them suffered from severe hip dysplasia and other painful conditions caused by inbreeding."
The PETA video shows animals suffering
PETA Director, Elisa Allen, said: "Cruel puppy mills see dogs as nothing more than breeding machines.
"This year - Chinese Year of the Dog - PETA is calling on everyone to remember these imprisoned dogs' cries and pledge never to buy an animal from a pet shop or a breeder."
According to the organization, puppy mills are not unique to China.
Approximately 700,000 puppies are reportedly born in Britain each year, and one-third of them are thought to be bred by puppy farmers.