Researchers don't know why killer whales like to rub their sensitive stomachs on the bottom of shallow beaches, but they think it may be a form of grooming.
It takes an average of 345 squirts to yield a gallon of milk from a cow's udder.
There are about 500 different kinds of cone snails around the world. All have a sharp, modified tooth that stabs prey with venom like a harpoon. Most cone snails hunt worms and other snails, but some eat fish. These are the ones most dangerous to people. The nerve toxin that stops a fish is powerful enough to also kill a human.
The more that is learned about the ecological benefits of bats, the more home gardeners are going out of their way to entice these amazing winged mammals into their neighborhoods. Bats are voracious insect eaters, devouring as many as 600 bugs per hour for 4 to 6 hours a night. They can eat from one-half to three-quarters their weight per evening. Bats are also important plant pollinators, particularly in the southwestern U.S.
The crocodile is surprisingly fast on land. If pursued by a crocodile, a person should run in a zigzag motion, for the crocodile has little or no ability to make sudden changes of direction.
Rome has more homeless cats per square mile than any other city in the world.
It takes approximately 69,000 venom extractions from the coral snake to fill a 1-pint container.
The most carnivorous of all bears is the polar bear. Its diet consists almost entirely of seals and fish.
The Dalmatian dog is named for the Dalmatian Coast of Croatia, where it is believed to have been originally bred.
Scientists say that pigs, unlike all other domestic animals, arrive at solutions by thinking them through. Pigs can be — and have been — taught to accomplish almost any feat a dog can master, and usually in a shorter period of time.
It would require an average of 18 hummingbirds to weigh in at 1 ounce.
The digestive juices of crocodiles contain so much hydrochloric acid that they have dissolved iron spearheads and 6-inch steel hooks that the crocodiles have swallowed.
Seals can withstand water pressure of up to 850 pounds per square inch.
Jackrabbits are powerful jumpers. A 20-inch adult can leap 20 feet in a single bound.
Several poison-dart frog species are bred at the National Aquarium in Baltimore. There, researchers gauge the toxicity of poisonous species by taste. No danger is posed, because frogs caught in the wild gradually become less poisonous, and captive offspring are nontoxic. The change may be due to diet. The frog's natural menu — mostly tropical ants and springtails — cannot be duplicated in a terrarium.
Javelinas are free-ranging, yet territorial animals that travel in small herds. One of the reasons they travel in numbers is so they can huddle to stay warm — they don't handle cold well and can freeze to death quickly.
Javelinas are very noisy animals among each other and squeal, snort, woof, and click their teeth to communicate.
There are buffalo in Poland. They live mainly in the area of the Bialowieza Forest and are known as "zubra." The well-known Polish vodka Zubrowka, which means "buffalo brand," takes its name from these animals.
There are close to 4,000 known species of frogs, including toads.
The most venomous of all snakes, known as the Inland Taipan, has enough venom in one bite to kill more than 200,000 mice.
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