Animal Records  Athletes' accomplishments in the Olympics are
certainly impressive. But non-human feats may truly astound you.
Find out about some world records held by mammals, birds, fish,
reptiles, and invertebrates.  Fastest Mammal (land) Cheetahs can
run up to 70 miles per hour. Fastest Mammal (water) Dall
porpoises can swim up to 35 miles per hour. Fastest Bird (land)
North African ostriches are both the fastest bird on
land—running up to 45 miles per hour—and the biggest, weighing
in at 345 pounds. Fastest Bird (sky) Peregrine falcons can dive
toward the earth at more than 200 miles per hour.  Fastest Fish
Sailfish can swim up to 68 miles per hour. Loudest Animal Blue
whales' low-frequency pulses are as loud as 188 decibels—louder
than a jet engine—and can be detected more than 500 miles away.
On land, the loudest animals are howler monkeys, whose howl can
be heard three miles away. Longest Migration Arctic terns
migrate to and from the Antarctic—about 22,000 miles round
trip—each year. Among mammals,