106 FOUR-FOOTED AMERICANS 



III. Rollers . = . . » . . . Salt-water Mammals, whose fore limbs 



are hidden in skin mittens. They roll 

 through the water and are helpless on 

 land. (Whale.) 



I V. Hoof Wearers Swift-moving ^Mammals, with toes com- 



pacted into small feet, called hoofs, 

 and having their horns in pairs. 

 (a) Eonters. With two upper tusks like a Pig. (Peccary.) 

 (h) Solid-horned Ctid-cJietcers. Hard, branching, bony horns 



like a Deer. (Moose.) 

 (c) Ilolloir-horned Cud-chewers. Hollow, curved horns like a 

 Cow. (Buffalo.) 



V. Gnawers The largest guild among fourfoots. 



Animals with four sharp, front-cut- 

 ting teeth. All eat vegetable food, 

 though some prefer animal. .1// tlie 

 nuimnce animah are Gnau'ers. 

 (a) Shadoic-taUed Gimwent. Having upright, plumy tails. 



((ii-ay Squirrel.) 

 (J)) /jitrrowhu/ Gnmcers. Those who make their homes under 

 ground. (Woodchuck.) 



(c) Swimming Gnaiceis. Those who spend part of their time 



in the water and usually live near it. (Muskrat.) 



(d) Long-eared, Short-tailed Gnawers. Having Kabbit-like 



ears. (Wood Hare.) 



VI. Flesh Eaters Mammals with four, long-pointed dog- 



like teeth for tearing meat. 



(a) Claw-handed Flesh Eaters. Toes ending in movable claws 

 like the house cats. (Wildcat.) 



(h) Dog-nosed Flesh Eaters. With pointed muzzles and bark- 

 ing calls. (Fox.) 



(f) The Greed// Growlers. Beasts who eat both meat, fruit, 

 and vegetables. (Bear.) 



(d) Little Fur Bearers. AVho all yield fur of more or less 



value. (Mink.) 



(e) Water People. Great ]\Iaminals with flipper-like limbs, 



living chiefly in the water. (Seal.) 



VII. Bug Biters Burrowers, who kill harmful insects. 



(Moles.) 



