re, the fish itself must look out for its own
danger. Otherwise:

A bigger fish comes, and eats the small fish. But the bigger fish also
must look out for its own danger. Otherwise:

The jaguar comes, and eats the bigger fish. But the jaguar also must
look out for his own danger. Otherwise:

The alligator comes, and eats the jaguar. But the alligator also must
look out for his own danger. Otherwise:

The hunter comes, and shoots the alligator.

So you see that the animals that dwell in the jungle have to cultivate
all their gifts to get on in life.

CHAPTER XVI

The Dog Tribe

I have told you of several flesh-eating animals that are of the Cat
Tribe. But there are some flesh-eating animals that are of the Dog
Tribe. The most important one of these in the jungle is the _wolf_.

How can you tell the difference between the Cat Tribe and the Dog Tribe?
By the four qualities that the Cat Tribe has, and which the Dog Tribe
does not have.

I. The members of the Cat Tribe have four fangs. Those of the Dog Tribe
do not have fangs. They have special teeth of their own kind.

II. The members of the Cat Tribe have a rough tongue. Those of the Dog
Tribe have a tongue which is not quite so rough. They do not need a very
rough tongue, as they can scrape the meat from a bone with their teeth.

III. The members of the Cat Tribe have retractile claws. The Dog Tribe's
claws are rigid and stiff; that is, they are thrust out all the time.
The members of the Dog Tribe do not use their claws in seizing or
holding their prey; they hold the prey in their jaws.

IV. All of the Cat Tribe have padded paws: they have them for many
reasons, which I have mentioned on pages 71-72. But the paws of the Dog
Tribe are not so thickly padded with muscles. The Dog Tribe do not need
the thick padding of muscles, because:

1. They do not need to stalk their prey silently. They catch their prey
by running it down, as a greyhound catches a hare.

2. They do not strike down their prey with their paws, but seize it in
their jaws.

3. They do not need to give a _bound_ in catching their prey, so the
muscles under their feet need not act like _springs_.

The members of the Dog Tribe gain on their prey by moving their legs
_quickly_, not by covering a large amount of ground with each movement
of their legs. But the Cat Tribe do just the opposite: they do not move
their legs so quickly, but they cover a larger amount of ground at each
mov