Amazing footage has emerged from the US of a baby dressed as a lion coming face-to-face with a real lion.

The video, filmed at Zoo Atlanta in Georgia on December 9, shows 11-month-old Aryeh interacting with a very large male lion through the glass of the enclosure.

The filmer later wrote online: "The lions were immediately interested in our little lion cub, and it wasn't long before they couldn't stand their curiosity any longer and came right up to the glass.

"Aryeh was completely unfazed and interacted with the lions for a few minutes."

"We took some pictures and videos before moving along as the lions started getting a little worked up and we didn't want to make them too anxious," she continued.