Breyer Hoss Cartwright's Horse Features Lorne Greene, Pernell Roberts, Dan Blocker, and Michael Landon, chronicled the adventures of Ben Cartwright The iconic Ponderosa map at the beginning of each episode, coupled with the well-known Bonanza theme song Chub remained with the series from start to finish 15:3 hand Quarter Horse, thoroughbred-cross gelding Chub weighed a sturdy 1250 pounds