This video from the National Geographic shows different breeds of modern dogs and how they attack their prey. Heavier dogs use their own body weight to bring you down, and lighter dogs build up momentum by running and jumping at you. The video also talks about bite strength and how head size affects it.

Takeaway lesson: do your best not to get bitten by a dog while it’s coming at you. Make it slow down or if possible, only bite you when it’s stationary. Or at the very least, avoid getting bitten by a mastiff. Those puppies pack a massive 500 lbs. bite. If one of them bites your hand, it will crush your bones and quite possibly sever a finger or two.

Dog Attack Styles from the National Geographic