When many wolves howl together it is called a chorus howl. There are many different kinds of wolves in the world. Two of them are the gray wolf and the red wolf. They are the only types that live in the USA but wolves can be found all over the world. Wolves are carnivores, which means they eat only meat.
Wolves are also predators.
That means they hunt and eat other animals. Wolves live in dens with their babies after they are born. Endangered means the animal has a risk of becoming extinct, and threatened means if changes are not made, the animal could become endangered in the future. Most of these wolves live in Alaska. Because there are so many wolves in Alaska, the wolves there are not protected.