A tyrannosaur that lived 70 million years ago in Alaska wasn't nearly as big as Tyrannosaurus rex, but it wasn't as small as ...

We will also discuss their size and weight differences ... For example, the average polar bear reaches 6-8 feet tall, while Kodiak bears grow 8-10 feet tall on average. This means that Kodiak ...

The polar bear is a carnivorous bear ... is about half that size. Although it is the sister species of the brown bear, it has evolved to occupy a narrower ecological niche, with many body ...

Scientists have quantified how much climate change has driven the population decline of polar bears living in Canada's Hudson ...