They actually, on occasion, use their hair as a weapon. There is a characteristic bald spot on the abdomen of many tarantula, brought on by rubbing hair into an enemy's eyes to blind them. As in many horror movies, they have fangs on their abdomen that lead to a set of lungs. These are used to stun and poison enemies. In this respect, they are pretty scary for the unprepared viewer.
Many tarantulas prefer to live in the ground, instead of in a web or in a tree.
Often, they will find a cool, dry hole to live in. They do not live together. Each tarantula is fiercely individual, having its own hole and eating and sleeping patterns. Often, food is dragged into the home to eat. This can range from a small bug to a baby bird.