"Look at him go! Look at him go! Oh, he's a hunting dog all right!" yelled Chot, as he saw Rick's pet leap after the cat. "Oh, look at him go! Sic her, old boy! Sic her!"
Neither Rick nor Chot were cruel boys. They would not have harmed Sallie for anything, and they would not have let Ruddy hurt the gray cat. But they could not help wanting to see whether the cat would get to the fence first, or whether Ruddy would win the race. If Ruddy should happen to catch the cat—well, then Rick and Chot were ready to stop the puppy from doing her any harm. But if he should not—why, then it was a good race between a dog and a cat—that was all.
You may well believe that Sallie ran as fast as she could. She knew a lot about dogs—she knew that dogs, almost always, chased cats as they probably always will—just why I do not know. And Sallie ran as fast as she could.
It is not very hard for a cat to get away from a dog. Fear seems to give the cat greater speed and then, too, there is always a chance of climbing a fence or a tree. A cat can easily get up in a tree, though it can not always so easily get down again. And very few dogs can climb trees. I have seen moving pictures of African hunting dogs getting up in low trees after panthers, but these trees were covered with branches close to the ground, so a dog could really leap up among them. No dog can climb a straight tree trunk, but a cat easily does this.
And the reason for this is that a cat's claws are sharper than a dog's, and they are what are called "retractile." That is they can be pushed out and drawn in again. If you have ever taken pussy's paw, and gently pressed it, you have seen her claws come out from the little sheaths, or pockets of skin, in which they are kept under her fur. Sometimes you can press them out, and sometimes, especially after pussy awakens after a nap, you may see her stick out her claws herself and pull them in again.
Because of this, and because her claws are sharp, a cat can really climb a tree, just as the telephone lineman climbs a pole by sticking his sharp iron spurs in it. The cat sticks her claws in the soft bark of a tree.
If a dog's claws were sharp he might climb a tree, but they are not. A dog's claws always stick out; he can not put them out when he pleases and pull them back again, as pussy can. And because a dog's claws are always out they get worn off, and dull, as he runs around on the ground.
On raced Sallie and Ruddy raced after her, and soon, coming to a tree, up the cat shot like a flash of light. She reached a limb and sat down on it, her tail big and fluffy, her back arched and her heart beating fast.
Ruddy reached the foot of the tree and there he had to stop. He could not climb. He just sat there, looking up at Sallie and barked. And the cat knew the dog could not get her. She was safe as long as she stayed in the tree.
"He sure is a hunting dog all right!" exclaimed Chot, as he and Rick ran along after Ruddy.