Bear Know

Crab is a beast of decapod crustaceans from infraordo Brachyura, which is known to have a “tail” is very short, her stomach was totally hidden under the chest. Crabs are protected by a very hard outer skeleton, comprised of chitin, and armed with a pair of tweezers. And blue swimmer crabs are also included in infraordo Brachyura. These animals live almost all the oceans of the world, for land crabs usually live in the tropics.

Crabs have the five pairs of legs, claw-shaped pair of first leg, this leg is not used for the move, normally used tweezers to grab the food, other than to reach for food, capii used to conduct the defense or to defend themselves from attack. In almost all kinds of crabs, accept a few only, abdomen folded under the cephalothorax. Crab’s mouth parts covered by the maxilliped is flat, and the front of the carapace does not form a long rostrum.  Crabs keep breathing with gills in a way to condition himself to stay moist and can bind oxygen in the process of breathing. Crab gill plates are formed from a flat “phyllobranchiate”, similar to the gills of shrimp, but with a different structure.

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Goats are animals with four legs medium-sized mammals, they are widely spread in southwest Asia and Europe. Neuter wild goats have a pair of horns, but horns on the goat greater.Generally, goats have beards, convex forehead, tail slightly upward, and most straight hairy and rough. Compared to other ruminant animals, including the small size of the goat. Usually they are about 90 cm high, but will differ in each species.

In its natural habitat, goats live in groups of 50-20. In search of food, goat group is led by the oldest female goats. The goat of the group serves as a security guard. Goat is a herbivore animals. They are very selective in choosing food. They search for food during the day and night.

Usually these animals used the meat, skin, etc., issued by the dairy goat is very much benefited. According to the news has been cultivated human Goat about 8000 until 9000 years ago. Beside meat goat’s milk has many benefits.

Goat’s milk has long been known in the tradition of some nations in the world. Along with the progress of the age and modern science, has been known that goat milk is very nutritious in helping cure various diseases because it is rich with nutrients that nourish. Containing low-lactose milk goats.

Because the animal that has many benefits, many made in goats as livestock. Many people breed goats as a source of income.

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Bats are mammals that can fly from the order Chiroptera with both front legs are developed into wings. This animal is a species of mammal that can fly, using the wings. Bats are nocturnal and fly to find food at night. Because these animals are very sensitive to dehydration.

It has very good eyesight, despite having very good eyesight, relying more bats in a loud voice to lead him to fly. These sound vibrations have a frequency between 25000-50000 Hz. When hitting an object or objects, sound vibrations bounce back, then caught his ears wide that serves as a radar for him. In this way he takes a tenth of a second, to find out what’s in front, where it goes, and at what

speed. Odd-shaped nose like a leg of the horse or trident with a bulge can

make ultrasonic noises. In the afternoon he slept with a swinging inverted. Habitat usually bats in the caves, outdoors, or in trees.

Bats are very agile animals in the hunt, he will lock the target with a far-reaching. He must always lead to targets that fly and move freely. bats would maneuver so that as she approached. These animals require a short time to catch its prey.

In the process of hunting by bats until captured prey, typically takes less than one second. Bats use ultrasonic waves from its mouth to determine the target position. With waves that he remove a bat increasingly tough though in a dark room.

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