Though Leptoceratops was 6 to 9 feet (2 to 2.7 meters) long, it was only 2 to 3 feet (0.6 to 0.9 meters) high at its hips. This long, slender, low-slung animal browsed on ground cover and other low plants—but it may have been able to extend its reach.

As an individual, Leptoceratops, a smallish herbivore, may have been quite vulnerable to the formidable predators of the Cretaceous period. Leptoceratops roamed western North America between 67 million and 65 million years ago.