This chicken-size dinosaur had feathers and winglike limbs.
Legal Terms of Use Privacy Policy Your California Privacy Rights Children’s Online
Stingrays, with their wide, flat bodies, may not look like fish, but they are. They are related to sharks, and like their shark cousins, they do not have bones. Instead, their bodies are supported by cartilage—the same material that you feel inside the tip of your nose. Stingrays have broad fins that run the full length of their bodies, giving them a flat, roundish shape. To swim, some stingrays move their whole bodies in a wavy motion that propels them through the water. Other species flap their fins like bird wings and „fly“ through the water. Stingrays have tails that are armed for defense. Some kinds of stingrays have a spine in their tail with a very sharp point and edges that are serrated or notched. Many species, including the exotic-looking blue-spotted stingray, have venom that is delivered through their tails. That venom, and the spine itself, can be dangerous to humans. Stingrays prefer shallow, near-shore waters in warm parts of the world. Here, they spend most of their time lying partially buried on the ocean floor hiding from predators, like sharks, or waiting for prey to swim by. Their colors usually match the mud or sand they hide in. While a stingray’s mouth is on the underside of its body, along with its nostrils and gill slits, its eyes are on the top. Scientists don’t think they use their eyes for hunting very much though. Instead, they use special sensors called ampullae of Lorenzini, which can detect the tiny electrical charges emitted by their prey. Prey for stingrays includes clams, oysters, shrimps, crabs, and mussels. When they find dinner, stingrays crush their meal using strong jaws. Generally, female stingrays give birth once a year. They usually have two to six young at a time. While a baby stingray is still inside its mother, it grows to be quite large and developed so that when it’s born, it looks like a little adult. From birth, the young stingray is able to fend for itself.
Legal Terms of Use Privacy Policy Your California Privacy Rights Children’s Online
Goblin Shark
Legal Terms of Use Privacy Policy Your California Privacy Rights Children’s Online
Mallard ducks are the most common and recognizable wild ducks in the Northern Hemisphere. You’ll find them near ponds, marshes, streams, and lakes, where they feed on plants, invertebrates, fish, and insects. Mallards are dabbling, or surface-feeding, ducks because they eat by tipping underwater for food—head down, feet and tail in the air—rather than diving. Mallards also forage and graze for food on land. The male mallard duck, called a drake, sports a glossy green head, a white ring around its neck and a rich, chestnut-brown breast. The mottled brown female mallard looks downright dull next to the male’s showy feathers. The mallard duck’s outer feathers are waterproof, thanks to oil that’s secreted from a gland near the tail. Beneath this tightly packed waterproof layer of feathers lies a soft, warm layer of feathers called down. Twice a year, mallards molt, or shed, their flight feathers, temporarily grounding the birds for several weeks until the feathers grow back. Mallards fly in groups called flocks. Like most migratory birds, mallards fly in the famous V formation. During winter migration, mallards fly south in search of warm weather, often resting at the same spots year after year. Migrating mallards can travel great distances, relying on rivers, coasts, and valleys to find their way. A female mallard lays up to a dozen eggs in nests on the ground near water, often in a small depression or tree hole. She lines the nest with warm down plucked from her undercoat. Soon after birth, baby ducks, called ducklings, open their eyes. A little more than a day after hatching, ducklings can run, swim, and forage for food on their own. They stay in the nest for less than a month. A group of ducklings is called a brood. Outside the nest, the brood sticks close by the mother for safety, often following behind her in a neat, single-file line.
Legal Terms of Use Privacy Policy Your California Privacy Rights Children’s Online
Fastest mammal on land, the cheetah can reach speeds of 60 or perhaps even 70 miles (97 or 113 kilometers) an hour over short distances. It usually chases its prey at only about half that speed, however. After a chase, a cheetah needs half an hour to catch its breath before it can eat. The cheetah’s excellent eyesight helps it find prey during the day. The cheetah is hard to see because its spotted coat blends with the tall, dry grass of the plains. Suddenly, the cheetah makes a lightning dash. It knocks its prey to the ground and then bites its throat. Once found throughout Asia and Africa, cheetahs today are racing toward extinction. Loss of habitat and declining numbers of their prey combine to threaten the future of these cats. Cheetahs live and hunt mainly in open grasslands and bushy areas in parts of Africa and the Middle East. Cheetahs eat small- to medium-size animals, such as hares, impalas, wildebeest calves, and gazelles. Because of their size, strength, and predatory skills, cheetahs are considered one of the “big cats.” Tigers, lions, leopards, jaguars, and cougars are also part of this grouping. Take the big cat quiz to see how much you know about these fierce felines. Then, just for fun, see which wild cat you’re most like with our personality quiz.
Legal Terms of Use Privacy Policy Your California Privacy Rights Children’s Online
Female black widows are shiny black, with a red-orange hourglass pattern on their abdomen. Male black widows are not black, but brown or gray with small red spots. Black widows are poisonous arachnids—animals that have a skeleton outside their body, a segmented body, and eight jointed legs. They are not insects. Their deadly poison is said to be 15 times stronger than rattlesnake venom. Black widows use a silk-like substance to weave tangled-looking webs, typically close to the ground in covered or dark places, such as near drain pipes or under logs. The female hangs upside down in the web to await her prey, exposing her bright markings as a warning to potential predators. The black widow senses vibrations to the web. When an unlucky intruder gets trapped, the spider immediately begins weaving its glue-like webbing around it. Insects such as flies, mosquitoes, or even larger prey like grasshoppers are typically caught. Once captured, the black widow injects its victims with poison, paralyzing them. The tips of the black widow’s legs are coated with an oily substance that prevents the black widow from getting caught in its own web. Adult male and female black widows live solitary lives, meeting only to breed. The female black widow lays approximately 200 eggs. The eggs incubate for some 20 days in a small, round papery sac that’s attached to the mother’s web. After hatching, the baby spiders stay in the cocoon for up to one month. Three species of poisonous North American spiders carry the common name black widow under the genus Latrodectus. Each species occupies a distinct region of North America, as their names suggest: Eastern black widows (L. mactans), northern black widows (L. variolus), and western black widows (L. hesperus). These three species have very similar physical and behavioral characteristics. The name “black widow” comes from the female’s habit of eating the male after mating.
The female black widow is approximately 1.5 inches (38 millimeters) long. The male is about half the female’s size.
The black widow is prey for birds and other spiders. Although poisonous, the black widow is not considered aggressive unless threatened. In fact, the male black widow is reclusive and hardly ever seen by humans. While the black widow’s poison is rarely fatal to humans, it can cause severe pain and nausea.
Legal Terms of Use Privacy Policy Your California Privacy Rights Children’s Online
It’s a quiet, warm summer evening with no human in sight for miles in the woods. As the sun sets, tiny flashes of light start to flicker throughout the trees. At first there’s just a few, but soon hundreds of blinking lights are floating in the forest. Fireflies have come out for the evening.
Legal Terms of Use Privacy Policy Your California Privacy Rights Children’s Online
The mountain lion goes by many names, including cougar, catamount, panther, red tiger, deer tiger, and puma. This cat can be found throughout much of South and North America. The mountain lion used to be found all over the United States, but now is primarily seen in the western U.S. An endangered subspecies of mountain lion also remains in Florida. These felines are comfortable in many different habitats and, aside from humans, have the widest geographic range of any land mammal in the Western Hemisphere. In North America, mountain lions eat mainly deer, but they also eat smaller animals, such as mice and rabbits. These cats have a poor sense of smell, but have excellent vision and hearing that help them hunt in the early morning and evening hours. Their powerful hind legs enable them to jump as far as 40 to 45 feet (12 to 13 meters). This carnivore stalks its prey until an opportunity arises to pounce. Mountain lions “cache” their prey, or hide it under leaves and soil, where they can come back and feed on it over the course of several days. Mountain lions don’t roar, but females have a loud scream, which is believed to attract males. Females have an average of two to four cubs per litter and give birth in a den. The cubs are born with spots, which usually disappear by the time they are roughly nine months old. Their eyes also change from blue to yellow by the time they reach 16 months old. By 18 months, the young cats leave their mom to go fend for themselves. Because of their size, strength, and predatory skills, mountain lions are considered one of the “big cats.” Tigers, leopards, cheetahs, and jaguars are also part of this grouping. Take the big cat quiz to see how much you know about these fierce felines. Then, just for fun, see which wild cat you’re most like with our personality quiz.
Legal Terms of Use Privacy Policy Your California Privacy Rights Children’s Online
When an elephant drinks, it sucks as much as 2 gallons (7.5 liters) of water into its trunk at a time. Then it curls its trunk under, sticks the tip of its trunk into its mouth, and blows. Out comes the water, right down the elephant’s throat. Since African elephants live where the sun is usually blazing hot, they use their trunks to help them keep cool. First they squirt a trunkful of cool water over their bodies. Then they often follow that with a sprinkling of dust to create a protective layer of dirt on their skin. Elephants pick up and spray dust the same way they do water—with their trunks. Elephants also use their trunks as snorkels when they wade in deep water. An elephant’s trunk is controlled by many muscles. Two fingerlike parts on the tip of the trunk allow the elephant to perform delicate maneuvers such as picking a berry from the ground or plucking a single leaf off a tree. Elephants can also use its trunk to grasp an entire tree branch and pull it down to its mouth and to yank up clumps of grasses and shove the greenery into their mouths. When an elephant gets a whiff of something interesting, it sniffs the air with its trunk raised up like a submarine periscope. If threatened, an elephant will also use its trunk to make loud trumpeting noises as a warning. Elephants are social creatures. They sometimes hug by wrapping their trunks together in displays of greeting and affection. Elephants also use their trunks to help lift or nudge an elephant calf over an obstacle, to rescue a fellow elephant stuck in mud, or to gently raise a newborn elephant to its feet. And just as a human baby sucks its thumb, an elephant calf often sucks its trunk for comfort. One elephant can eat 300 pounds (136 kilograms) of food in one day. People hunt elephants mainly for their ivory tusks. Adult females and young travel in herds, while adult males generally travel alone or in groups of their own.
Legal Terms of Use Privacy Policy Your California Privacy Rights Children’s Online
There are about 5,000 different species of ladybugs in the world. These much loved critters are also known as lady beetles or ladybird beetles. They come in many different colors and patterns, but the most familiar in North America is the seven-spotted ladybug, with its shiny, red-and-black body. In many cultures, ladybugs are considered good luck. Most people like them because they are pretty, graceful, and harmless to humans. But farmers love them because they eat aphids and other plant-eating pests. One ladybug can eat up to 5,000 insects in its lifetime! Most ladybugs have oval, dome-shaped bodies with six short legs. Depending on the species, they can have spots, stripes, or no markings at all. Seven-spotted ladybugs are red or orange with three spots on each side and one in the middle. They have a black head with white patches on either side. Ladybugs are colorful for a reason. Their markings tell predators: „Eat something else! I taste terrible.“ When threatened, the bugs will secrete an oily, foul-tasting fluid from joints in their legs. They may also play dead. Birds are ladybugs‘ main predators, but they also fall victim to frogs, wasps, spiders, and dragonflies. Ladybugs lay their eggs in clusters or rows on the underside of a leaf, usually where aphids have gathered. Larvae, which vary in shape and color based on species, emerge in a few days. Seven-spotted ladybug larvae are long, black, and spiky-looking with orange or yellow spots. Some say they look like tiny alligators. Larvae grow quickly and shed their skin several times. When they reach full size, they attach to a leaf by their tail, and a pupa is formed. Within a week or two, the pupa becomes an adult ladybug. Ladybugs are happy in many different habitats, including grasslands, forests, cities, suburbs, and along rivers. Seven-spotted ladybugs are native to Europe but were brought to North America in the mid-1900s to control aphid populations. Ladybugs are most active from spring until fall. When the weather turns cold, they look for a warm, secluded place to hibernate, such as in rotting logs, under rocks, or even inside houses. These hibernating colonies can contain thousands of ladybugs. The name „ladybug“ was coined by European farmers who prayed to the Virgin Mary when pests began eating their crops. After ladybugs came and wiped out the invading insects, the farmers named them „beetle of Our Lady.“ This eventually was shortened to „lady beetle“ and „ladybug.“ NASA even sent a few ladybugs into space with aphids to see how aphids would escape in zero gravity.
Legal Terms of Use Privacy Policy Your California Privacy Rights Children’s Online
