Now that's a big dog! On February 10, a 155-pound black Newfoundland was named Best in Show at the Westminster Kennel Club Dog Show. He tied the record for heaviest winner ever. Here are the dog breeds whose members weigh the most.
1 Mastiff
2 Newfoundland
3 Irish wolfhound
4 Saint Bernard
5 Great Dane
SOURCE: AMERICAN KENNEL CLUB