31 Days of Monsters: The Grootslang

When the gods created Grootslangs, they were new at their jobs. They gave them enormous size, strength, cunning, and a ravenous appetite for all other life. Quickly realizing their mistake, they divided the Grootslangs in two, resulting in the creation of elephants and snakes. Only one Grootslang is left in its original state, and it prowls the dark places of Africa to this day.

31 Days of Monsters: The Roc

The Roc was an enormous predatory bird of Arabian legend. White and pale blue in color to help it blend in with the sky, the Roc was large enough to pick up elephants and carrie them away to it's mountain nesting grounds. It is said that sailors marooned at sea would disguise themselves as cattle by wrapping themselves in cowhide, in order to lure a Roc to pick them up and carry them back to mainland. This sounds like a plan of dubious merit since, I imagine many of those sailors ended up as breakfast for the terrible Roc.