Animal Facts Camel's milk does not curdle. A duck's quack doesn't echo . Penguins can jump as high as 6 feet in the air. A squrirrel cannot contract or carry the rabies virus.
Giraffes have no vocal chords.
A cockroach can live up to two weeks without its head before it starves to death. A crocodiles tongue is attached to the roof of its mouth. A rhinoceros horn is made of compacted hair. The cheetah is the only cat that can't retract its claw. Polar bears are the only mammal with hair on the soles of its feet.