Unlike many mammals,
Bears have an excellent sense of smell, better than dogs or possibly any other mammal.
The original word for "bear" has been lost. Medieval people thought that saying the ferocious animal's name would summon it, so they used a euphemism that meant "the brown one" ("bear").
There are no polar bears in Antarctica,
Bears are typically solitary animals, with the exception of courting individuals and mothers with their young.