Will someone please help me find this countdown that was about flying creatures?

I want to find this countdown show about flying and gliding creatures. It could have been on a different channel, but I am almost positive it was either on Animal Planet or the Discovery Channel. It was some countdown (ten all together). Number one was a spider. It had a snake that could fly over 100m, and also included a humming bird, a flying squirrel, and an eagle I think. If anyone can tell me the name of the show or a link to a video of the show that would be really rad. I watched it last year