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The Saint Bernard gains its name from the "Great St. Bernard Hospice;" the monastery where Barry and other mountain dogs was raised by monks to rescue victims from the snowy Alps.

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An adult lion's roar can be heard up to five miles (eight kilometers) away.

Cats see six times better in the dark and at night than humans.

The little tufts of hair in a cat’s ear that help keep out dirt direct sounds into the ear, and insulate the ears are called “ear furnishings.”

Cats have 32 muscles that control the outer ear (humans have only 6). A cat can independently rotate its ears 180 degrees.

A cat's whiskers are thought to be a kind of radar, which helps a cat gauge the space it intends to walk through.