-- This dog just may be the world's largest Pit Bull. Only 18-months-old, Hulk weighs a hefty 175 pounds.
Despite his intimidating size, his owners Marlon Grannan and his wife Lisa Grannan say Hulk is a sweet family dog and a best friend to their 3-year-old son Jordan.
Online videos and photos of Hulk with their son in their New Hampshire home shatter misconceptions about Pit Bulls as ruthless monsters.
Grannan's toddler can be seen riding Hulk, singing with him and napping with him.