RS 181

XIII ANIMAL SCAVENGERS AND CRIMINALS 199

XIV AS THE ALLIES OF MAN 210

XV THE FUTURE LIFE OF ANIMALS 234

ILLUSTRATIONS

Recreation is as common among animals as it is among children
(_in Colours_) _Frontispiece_

The Indians claim that the mother bison forced her calf to roll often
in a puddle of red clay, so that it might be indistinguishable against
its clay background 6

The zebra is one of the cleverest of camouflagers. The black-and-white
stripes of his body give the effect of sunlight passing
through bushes 7

Monkeys are the most musical of all animals. When they congregate
for "concerts," as some of the tribes do, the air is filled with weird
strains of monkey-music 20

Cats, unlike dogs, are very fond of music. And it has been proved that
their music-sense can be developed to a remarkable degree 21

A happy family of polar bears. The young cubs wrestle and tumble,
as playfully as two puppies. This play has much to do with their
physical and mental development 34

Dryptosaurus. The prehistoric animals, too, undoubtedly had their
play time, with games and "setting up" exercises 35

The mother opossum is never happier than when she has her little ones
playing hide-and-seek over her back 38

This young fox came from his home in the woods daily to play with a
young fox-terrier. He is now resting after a romp 39

Naosaurus and Dimetrodon, two extinct armour-bearers who should
have been well able to protect themselves 50

An armour-bearer of prehistoric times whose shield was an effective
protection against enemy horns 51

To the polar bear the ice and snow of the Far North means warmth
and protection. The mother bear digs herself into a snowbank,
where she lives quite comfortably throughout the winter 84

The sharp claws of the ground squirrel are efficacious tools in digging
his cosy underground burrow