Sergey Grigoriyev’s skeletal remains were found by police who went to his house after relatives reported him missing and they found the beast on the loose.
The bear, raised by the 41-year-old since the animal was a cub, also killed and ate to the bone one of his three dogs.
Police in Ozersk, shot dead the aggressive bear which had escaped from its cage.
Blood marks were seen on the snow from the fatal attack on the hunter.
“Officers used their service weapons to kill the dangerous animal,” said a police statement.
“As a result of the measures taken, the bear does not pose a threat to citizens’ lives and health any longer.”
Senior detective Alexey Petrov said: “The cage was open. The animal was walking around behaving aggressively.
“On the plot we found the skeletal remains of a man.”
Reports say Mr Grigoriyev rescued the bear, named Vorchun or Grumbler, four years ago, along with another cub.
He raised the wild animal on his suburban plot.
He gave away one cub but kept the other after the only offer he had for it was from a “baiting station”, where hunting dogs are trained with live predators.
Such stations are notorious for their cruelty.
A neighbour said he had shared tea with Mr Grigoriyev, but not seen him afterwards.
“We called him but he did not answer,” he said.
“When his relatives came, they saw a bear wandering around the plot. There was a dog with them.
“It attacked the bear, giving the people the opportunity to escape in the car.”
Detective Petrov said a dog belonging to Mr Grigoriyev and another that came with the relatives were killed and gnawed to the bone.
The bear had previously attacked its owner but he had ignored advice from friends to get rid of it.
The Russian Investigative Committee is examining the case.