Watch on YouTube Why do stick insects look like plants? They have evolved to resemble the plants they live and feed on, in order not to be eaten by birds and other animals. Stick insects are a wonderful example of natural selection at work. There are over 6,000 species of stick insect in the world, […]
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Watch this on YouTube How do spiders make webs? By producing silk from their bodies and weaving it into a strong web. There are two parts to this question: how do spiders produce silk and how do they make their webs. Let’s look at how they make silk first. Spiders are able to produce silk
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Watch this on YouTube What is the difference between a moth and a butterfly? Amongst other things, their wings, their bodies, how they behave, and how they pupate. Butterflies and moths both belong to the Lepidoptera family. Lepidoptera is a huge insect family and it contains 180,000 insects, which is approximately 10% of all living
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How can giraffes have such long necks? Giraffes have jointed vertebrae in their neck, a large amount of ligament, and an enormous heart to get the blood to their head. Interestingly, giraffes used to be called camelopards, because they were kind of shaped like a camel and spotted like a leopard. That word came from
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Why do Greenland sharks live so long? Partly because of their very slow metabolism. Greenland sharks are large sharks that live in the northern parts of the Atlantic Ocean and in the Arctic Ocean. They live near Greenland, hence the name. They can grow up to 7 meters in lengths and they can weigh up
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Why do hyenas have long necks? To give them more strength and leverage for when they eat their food. There are four types of hyena. These are the brown hyena, the aardwolf, the spotted hyena, and the striped hyena. The hyena we most closely associate as a hyena is the spotted hyena. They all vary
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Why can a peregrine falcon fly so fast? Because of their wings, their feathers, their breastbone, their heart, their lungs, and a few other things. Peregrine falcons are one of 40 species of falcon. They are about the same size as a crow and they are birds of prey. They eat medium sized birds, such
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How can an eagle see so far? Eagles can see about eight times farther than humans because the cones in their eyes are very small and tightly grouped together. There are 68 different species of eagle spread across the world. They are birds of prey that hunt by swooping down on their prey from high
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Why do crabs walk sideways? They walk sideways so they don’t trip over their legs. However, some crabs do walk forwards. There are many different species of crab and they can live in saltwater and in freshwater. The smallest crab is the pea crab, which is only a few millimeters across and is a parasite
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How big and how small can a mammal be? The Etruscan shrew is the smallest mammal and is 40 mm long and weighs 2 g. The blue whale is the largest mammal and is 29.9 m long and weighs 199 tons. The African elephant is the largest land animal and is about 4 m tall
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