Blackfoot Lodge Tales, by George Bird Grinnell, [1892], at sacred-texts.com
Once, long ago, the antelope and the deer met on the prairie. At this time both of them had galls and both dew claws. They began to talk together, and each was telling the other what he could do. Each one told how fast he could run, and before long they were disputing as to which could run the faster. Neither would allow that the other could beat him, so they agreed that they would have a race to decide which was the swifter, and they bet their galls on the race. When they ran, the antelope proved the faster runner, and beat the deer and took his gall.
Then the deer said: "Yes, you have beaten me on the prairie, but that is not where I live. I only go out there sometimes to feed, or when I am travelling around. We ought to have another race in the timber. That is my home, and there I can run faster than you can."
The antelope felt very big because he had beaten the deer in the race, and he thought wherever they might be, he could run faster than the deer. So he agreed to race in the timber, and on this race they bet their dew claws.
They ran through the thick timber, among the brush and over fallen logs, and this time the antelope ran slowly, because he was not used to this kind of travelling, and the deer easily beat him, and took his dew claws.
Since then the deer has had no gall, and the antelope no dew claws.
[NOTE. A version of the first portion of this story is current among the Pawnees, and has been printed in Pawnee Hero Stories and Folk Tales.]