The last are its worst foes. Hunters state that for one deer killed by themselves, five fall a prey to the wolves. These attack the young and feeble, and soon run them down. The old deer can escape from a wolf by superior speed; but in remote districts, where the wolves are numerous, they unite in packs of eight or ten, and follow the deer as hounds do, and even with a somewhat similar howling. They run by the nose, and unless the deer can reach water, and thus escape them, they will tire it down in the end. Frequently the deer, when thus followed in winter, makes for the ice, upon which he is soon overtaken by his hungry pursuers. Notwithstanding all this, the American deer is still common in most of the States, and in some of them even plentiful. Where the wolves have been thinned off by "bounty" laws, and the deer protected during the breeding season by legislative enactments, as is the case in New York, their number is said to be on the increase. The markets of all the great cities in America are supplied with venison almost as cheap as beef, which shows that the deer are yet far from being scarce. The habits of this creature are well-known. It is gregarious in its natural _habitat_. The herd is usually led by an old buck, who watches over the safety of the others while feeding. When an enemy approaches, this sentinel and leader strikes the ground sharply with his hoofs, snorts loudly, and emits a shrill whistle; all the while fronting the danger with his horns set forward in a threatening manner. So long as he does not attempt to run, the others continue to browse with confidence; but the moment their leader starts to fly, all the rest follow, each trying to be foremost. They are timid upon ordinary occasions, but the bucks in the rutting season are bold, and when wounded and brought "to bay," are not to be approached with impunity. They can inflict terrible blows, both with their hoofs and antlers; and hunters who have come too near them on such occasions have with difficulty escaped being gored to death. They are foes to the snake tribe, and kill the most venomous serpents without being bitten. The rattle-snake hides from their attack. Their mode of destroying these creatures is similar to that employed by the peccary (_dicotyles_): that is, by pouncing down upon them with the four hoofs held close together, and thus crushing them to death. The hostility of the peccary to snakes is easily understood, as no sooner has it killed one than it makes a meal of it. With the deer, of course, such is not the case, as they are not carnivorous. Its enmity to the reptile race can be explained only by supposing that it possesses a knowledge of their dangerous qualities, and thinks they should therefore be got rid of.