Traveling at a rate of 2 to 3 miles per hour, camels can carry 500 to 1,000 pounds on their backs. They are able to keep up this pace for 6 or 7 hours a day. Camels will refuse to carry loads that are not properly balanced.
The pronghorn antelope can run up to 61 miles per hour.
The flounder swims sideways.
Tuna swim at a steady rate of 9 miles per hour for an indefinite period of time — and they never stop moving. Estimates indicate that a 15-year-old tuna travels one million miles in its lifetime.
The pronghorn antelope is the fastest mammal to be found in North America, and second only to the cheetah as the fastest mammal on the planet.
The flying snake of Java and Malaysia is able to flatten itself out like a ribbon and sail like a glider from tree to tree.
Tunas will suffocate if they ever stop swimming. They need a continual flow of water across their gills to breathe, even while they rest.
The pupil of an octopus's eye is rectangular.
The frigate bird can fly at a speed of 260 miles per hour.
Turtles survived the upheavals of the last 200 million years, including the great extinction episode that eliminated the dinosaurs. Now, about half of the world's turtle species face possible extinction — due in large part to a growing demand for turtles as a popular dining delicacy and a source of traditional medicines.
The raccoon derives its name from the Indian word meaning "he who scratches with his hands."
The fur of the vicuna, a small member of the camel family which live in the Andes mountains of Peru, is so fine that each hair is less than two-thousandths of an inch. The animal was considered sacred by the Incas, and only royalty could wear its fleece.
The raven is the first bird mentioned in the Bible. It was sent out by Noah to see if the waters had abated.
The garfish has green bones.
The gastric juices of a snake can digest bones and teeth — but not fur or hair.
Two rats can become the progenitors of 15,000 rats in less than a year.
Unlike dolphins, porpoises are not very sociable.
The rear portion of the head of a horse is called the poll.
Unlike most fish, electric eels cannot get enough oxygen from water. Approximately every five minutes, they must surface to breathe, or they will drown. Unlike most fish, they can swim both backwards and forwards.
The ring-tailed lemur, a primate found only in Madagascar, meows like a cat.
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