muscle, n.All

Spiders don't have muscles in their legs. They use hydraulics. When they die, their legs curl up because the blood pressure is gone.

An elephant's trunk has 150,000 muscle units.(according to National Geographic)

Cats have 32 muscles in their ear.

Cats are dextrous --- they have 32 muscles in each ear

what is the heaviest muscle in the body?the tongue, because so few people can hold it