Yes, the muskox is a mammal.
Muskox was created in 1816.
No, the muskox is an Arctic wolf's prey item.
The scientific name for the muskox is Ovibos moschatus.
No.
A muskox stands around 5 to 6 feet in length.
yes
in the night
yes
A young one, but not an adult one since the muskox has such thick fur to protect itself from blizzards, wolves, and polar bears. The muskox has a weight advantage of 880 pounds, whereareas the siberian tiger has a weight of 600 to 650 pounds. The muskox's weight would make it very hard for the siberian tiger to bring it down. Also, if the siberian tiger gets near the muskox, the muskox could kill it with a gore of a horn or a headbutt.
NO. Muskox are in fact a bit smaller and lighter than a Siberian tiger.
Muskoxen don't kill polar bears. A polar bear has too thick of fur and a layer of fat to be killed by a muskox. It can, however, be wounded if gored by a muskox's horns.