The Herculous Bird (Herc)
Status: Species currently unknown to science.
Extinct 65 million years ago.

The largest creature ever to have lived and, also, the fastest. They had two sets of double wings, a balloon-like inflatable gas bag for extra buoyancy plus, of course, its trademark super-sonic Wind Power! The Herculous's bi-wing design was soon overtaken by simpler single-winged flying reptiles and its gas bag, which used a highly combustible methane gas, meant that the unfortunate creatures were prone to explode. On Infinity, Herc who has promised NEVER to use his dangerous Wind Power ever again, now provides Patrick with a sort of jumbo taxi service, ferrying him around Infinity as he performs his duties.

The Herculous

Reason for Extinction:

As temperatures on earth rose, the sight of exploding Herculouses became all too common. The last Herculouses finally blew up together 65 million years ago causing the famous Cretaceous mass extinction.