A group of tourists on safari in Tanzania got more than they bargained for when a cheetah climbed into their vehicle.

Remarkable footage shows the big cat sniffing around the inside of the car having entered through the side of the vehicle.

The video shows one member of the group nervously waiting as the cheetah looms over his shoulder.

The man in the video, Britton Hayes, was reportedly told by his guide to keep still and not make eye contact with the animal.