Yes, just about all animals have enemies, or predators, trying to eat/attack them. The enemy to the deer is bears, coyotes, wolves, wild cats (cougars mainly), and humans, too. They can tell when danger is near, and sometimes don't even like to be bothered by another herd of deer. They have a keen sense of smell and can smell a strange scent more than 100 yards away.
The enemies of white-tailed deer are wolves, coyotes, feral dogs, mountain lions, and humans.
lion
the sika's deer enemies are man, wolves, coyotes, bobcats and cougars.
Automobiles and each other
wolves and jaguars
The long thin legs of the deer help it to run fast and escape from enemies. The body color merges with the surrounding and hides it from the enemies.
flat teeth =)
Humans, pumas, bears, coyotes and wolves.
Humans, coyotes, wolves, cougars, bears, etc.
The grizzly bear,cougar,man,wolves and coyotes.
7 cogar bear bobcat coyote eagle woverine + man
Their first protection is camoflague- deer are very hard to see against the background of places they live (You can't see me, you can't catch me!) Second, deer can run very fast, and jump high obstacles, like fences. Finally, deer have sharp hooves- and male deer have antlers they can fight with.