All animals with spines are vertebrates, and polar bears have spines.
A polar bear must be killed and skinned first before you can get furs from such a beast.
they do because their feet must stay protected from the ice
Yes, this is true.
They generally carry sufficient fat reserves, but they must eat or starve.
Cold, Dry, and snow-ball fights with polar bears are a must!
People, Killer whales, Walreses, and other polar bearsA polar bear's enemies are humans and other polar bears. But a polar bear's worst enemy is a killer whale.Polar bears enemy is mostly human and other polar bears!Climate change/global warming and the melting ice sheet, starvation, humans, summer in the arctic (since this is a time where they are not going to be eating much), dehydration, etc.HumansHumansthe ememies of polar bears are, Male polar bears, black & white killer whales, arctic foxes, global warming and humans
Polar Bears in fact need sunlight to keep warm although they have 2 layers of skin
polar bears drink the water they get there food from there food is fish and seals. ;)
They are naturally aggressive to other male bears when they encounter each other, although polar bears are free ranging and don't establish and mark territory. They will attack and kill the cubs of another male so that they can then mate with the female. They will fight with the female as she tries to protect the cubs, although not usually to the death. Other times, although rare, it may be because they are starving.polar bears kill other polar bears to demand their territory and because of male stress
Polar bears have had to become solitary creatures in order to survive in extreme temperatures. They must at times sleep when there is no food.
They reproduce sexually.. There must be copulation by a make & female in order to produce offspring.