Sarcee

(map)

The world was flooded, and one man and one woman survived on a raft on which they collected all kinds of animals and birds. The man sent a beaver (or, some say, a muskrat) diving to the bottom, and it brought up a little mud. The man shaped this to form a new world. It was at first so small that a little bird could walk around it, but it grew and grew.

Frazer, 1919, 314-315.