It happened Tuesday in Southwest Bakersfield, Cal. and was all caught on security camera video.
The boy is riding his bike when you see the neighbor's dog sneak around the back of the SUV, then run up and bite the boy. That's when the family's cat comes charging at the dog, tackles it and and chases it off!
The boy's mother, Erica Triantafilo, was outside at the time. She said the dog was still hanging around and she tried to chase it away and it bit her as well.
The boy was taken to the hospital and received 10 stitches. He is now home recovering.
Triantafilo said her neighbors voluntarily had their dog quarantined..
(Warning: the video contains some disturbing or graphic images.)