"Yap-yurr" (low pitched)

"And she has cubs, 'cause all have at this season. And they are
on that hillside, because that's the nearest place where any fox
den is, and they keep pretty much to their own hunting grounds.
If another fox should come hunting on the beat of this pair, he'd
have to fight for it. That is the way of the wild animals; each
has his own run, and for that he will fight an outsider that he
would be afraid of at any other place. One knows he is right --
that braces him up; the other knows he is wrong -- and that
weakens him." Those were the Indian's views, expressed much less
connectedly than here given, and they led Rolf on to a train of
thought. He remembered a case that was much to the point.

Their little dog Skookum several times had been worsted by the
dog on the Horton farm, when, following his master, he had come
into the house yard. There was no question that the Horton dog
was stronger. But Skookum had buried a bone under some brushes
by the plain and next day the hated Horton dog appeared. Skookum
watched him with suspicion and fear, until it was no longer
doubtful that the enemy had smelled the hidden food and was going
for it. Then Skookum, braced up by some instinctive feeling,
rushed forward with bristling mane and gleaming teeth, stood over
his cache, and said in plainest dog, "You can't touch that while
I live!"

And the Horton dog -- accustomed to domineer over the small
yellow cur -- growled contemptuously, scratched with his hind
feet, smelled around an adjoining bush, and pretending not to see
or notice, went off in another direction.