From what I've found they sleep in caves, [While they have pups] and they MIGHT burrow and sleep in holes, I'm not sure. I hope this helps..
Validus
They never sleep! jk they ussally sleep in the morning and hunt at night.
Gray wolves make their dens where no other male can get their puppies scent while the mother is out hunting.
A gray wolf makes its home anywhere except for tropical forests
Smeck
They often dig holes big enough for a female and her cubs, or find a small cave.
Wolves usually sleep in the open. They usually have no shelter except a female with pups may construct a den to protect her young.
They do both.
Gray wolves will sleep after they make their kill. Usually they will continue hunting until this happens. Normally they will sleep at night though, because they begin to hunt in the morning. Hope this helps!
Wolves rarely sleep at all, if they do it would be for a few hours. Unlike a bear, a wolf does not hibernate. Wolves are active all year round.
Nowhere, Grey wolves are not to be found in tropical rain forest.
most wolves are harmful and that does include gray wolves
Wolves are pretty tough so they hardly ever sleep in shelters. But when they have pups the mother and the pups stay in a den. From Wolf Girl
gray wolves are mammals who give birth
how baby gray wolves protected
Gray wolves, the species of wolves we have in the U.S., are a shade of gray, white, or black.
Gray wolves are the species Canis lupus.
Gray wolves live in the upper region of Michigan.
They are regular.
There is no specific collective noun for gray wolves. The collective nouns for wolves are a herd of wolves, a pack of wolves, or a rout of wolves.