Do you hear that roll of thunder? It's not an approaching storm, it's Lion-O's roar! OK, what you're really here for is the 9-minute leaked preview of 'ThunderCats,' not terribly awful 'ThunderCats' jokes.

In the new preview, Lion-O meets Cheetara, there's some Snarf action -- you can rest easy with that knowledge -- Tygra does some whipping and so much more. With all of this squeezed into a very brief clip, you can imagine how action-packed the actual premiere will be when it airs on Cartoon Network on July 29 at 8PM.

Meet the new (younger) ThunderCats in the preview below. Hat tip to Screen Rant for the video embed.