He leaped onto its back and rode off.

One leaped onto his back and hooked an arm around his throat.

He charged toward the creature and leaped onto its back.

She hiked up her skirts and leaped onto the horse's back.

The monkey freed itself from its makeshift acceleration couch and leapt onto my back.

With an almost human snarl it attempted to leap onto the horse's back.

In panther form, he leapt onto the reptile's back and bit deep into its neck.

Generally refers to the act of leaping onto another player's back or shoulders to take a high mark, usually in a contested situation.

Leading it was a soldier who leapt easily onto its back.

Rose leaped onto the thing's back and pummeled its head.