The man, 29, lived in his Malmö apartment with his two Staffordshire Bull Terriers and their three puppies. He was found on Sunday by friends who became concerned after not seeing him for two weeks.
The friends found the man's body in the hall of his apartment. His corpse was so badly disfigured that they did not recognize him, according to Aftonbladet.
The man's apartment was in a state of disorder and dog faeces were found in various places on the floor. The friends went out onto the balcony to call the emergency services. Police could only identify the man through fingerprints.
Despite police initially suspecting murder, a post mortem examination soon established that the man, reported to be a drug addict, had died naturally. The man's relatives have had the dogs put down.
Peter Krantz, who carried out the autopsy, said that it was not unusual for dogs to eat their dead owners in order to survive, although he said it was more normal behaviour in cats.
"Dogs often wait a bit longer," he told Aftonbladet.