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Do catfish have teeth?

Catfish are bottom-dwelling fish with flat heads covered with barbels that resemble a cat's whiskers. The barbels are covered with taste buds and are used to feel around in the dark and mud for food. Some catfish have taste buds located all over their bodies. Catfish eat practically anything.\nThere are many different species of catfish. Catfish either have no scales (naked) or are covered with armoured plating. They vary widely in size, from less than a half-inch to well over 100 pounds.

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What are coelacanths?

Coelacanths were once thought to have gone extinct about 65 million years ago, near the end of the Cretaceous period. The species was rediscovered by accident in 1938, when a living specimen was caught by fishermen. Several other living coelacanths have been caught since that time, although the fish remains rare. It is currently considered an endangered species.\nA second species of coelacanth lives near Indonesia. Both species are notable for their four fleshy fins, which look somewhat like legs. Coelacanths also have a unique hinged jaw, which lets them eat large prey. Their scales are rough..

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At what age are heifers ready to breed?

Farmers seek to have their heifers at a certain target weight, often 65% of the breed's average mature weight, before the heifer is allowed to breed. The heifer usually reaches this target weight either very shortly after puberty or within a few months. Having the heifer at the target weight during its first oestrus cycle optimizes its breeding ability and ensures a safer pregnancy for heifer and calf.

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How do sharks communicate?

While sharks have not been determined to have a sophisticated ability to communicate in complex ways that can be observed and recorded by scientists, they do have special sensory organs that humans lack. This organ consists of an electromagnetic sensor organ, typically located in the head; again, this may vary by species. For example, goblin sharks have a long, flat snout, and it is believed that this shape is an adaptation designed to help the sharks, which can live in the dark depths of the ocean, navigate and find prey fish.\nWhile sharks do congregate for purposes like feeding and mating, ..

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Why are dogs considered man's best friend?

Dogs have been domesticated for approximately 15,000 years. Working dogs provide many beneficial services, from helping blind people navigate the streets to rescuing lost hikers. Dogs can even learn to detect conditions such as impending seizures and direct their owners to a safe place. They herd and protect livestock and guard their families as well.\nHowever, pet dogs also provide significant benefits to their owners. They help alleviate loneliness and can give depressed people a reason to keep going. They provide support to people feeling grief or loss and can even help people make new huma..

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What are some causes of shaking and shivering in small dogs?

Excitement leads to shaking in some dogs, adds WebMD. Nausea is a common cause of shaking and shivering. Elderly dogs tremble, especially in their back legs. Dogs must be evaluated by a veterinarian to determine if the tremors are caused by pain.\nExposure to toxins and poisons causes shaking and tremors. Xylitol, chocolate and nicotine are three common poisonous items that cause tremors when ingested by dogs.

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How much should you feed a 10-pound dog?

While too much protein in a dog's diet can cause hyperactivity, dogs need at least 18 percent protein for maintenance and 22 percent for growth and reproduction, states Hartz. They also need at least 5 percent fat in their daily diet; do not use fat-free dog foods. For every 16 ounces of dry dog food consumed, a dog should have at least 32 ounces of water. Avoid feeding a dog raw food, which can lead to illnesses including dermatitis and seizures.

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How do you put together a dog crate?

Folding steel dog crates are the easiest type to assemble. With the crate in the upright, unfolded position, lift the front and rear panels into place. These crates usually have metal snaps or hooks located along the top of the front and rear panels. Click these snaps or hooks onto the top panel, and then complete the assembly by sliding the liner into the crate.\nAssemble a drop pin crate by lifting the front, back and side panels into place. Assembling this type of crate is much easier if you have an assistant hold the panels in place while you slide the drop pins into the vertical series of..

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What is a blue merle border collie?

The border collie breed originated in the border area between England and Scotland. Their value came from their talent for herding sheep and allowing the shepherds there to maintain vast flocks. The breed was recognized by the American Kennel Club in 1995. Because of their athletic abilities and keen intelligence, border collies are often regarded as one of the smartest dog breeds and frequently compete in dog sports and agility courses.\nBorder collies are friendly and exuberant dogs that require regular exercise. They are a slightly high-strung breed and, without proper exercise and stimulat..

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What are the different types of apes?

In the suborder of primates in the animal kingdom, apes are distinguished from other primates mainly by their lack of tails. All primates have eyes that face forward and flexible fingers, arms and legs, but apes also have different molar teeth for grinding food, appendixes and are more intelligent, using learned behavior for survival. The hylobatidae, or lesser apes, include all the species of gibbon. They are smaller and lighter than great apes. Their usual method of locomotion is brachiation, or swinging by their arms in tree branches, but they are also able to walk as bipeds, on two feet, e..

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