Animals

#81 Why do whales make sounds?

I learned this today. Whales make use of sound in the water because they cannot use their other senses. It is not possible to use light to see underwater because the water scatters it too much. Plus, some whales dive over 2,000m and light doesn’t really penetrate much farther than 1,000m. They also cannot rely […]

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#79 Can dogs smell cancer?

I learned this today. Dogs can probably smell cancer in people. Dogs have a phenomenal sense of smell. They have 300 million olfactory receptors in their noses. We have about 6 million. On top of this, the part of their brain that is devoted to analyzing smells is about 40 times larger than ours. It

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#70 How do animals change color?

I learned this today. There are different ways that animals can change their colors. Some of the ways take days and some of them take seconds. Let’s look at the slow way first. Some animals change their color very slowly. Some do it by completely shedding their fur. These are mostly mammals or birds that

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#61 How do antlers grow?

I learned this today. Antlers are made of bone and can grow up to 1 inch (2.5cm) a day. Antlers are grown by the males (mostly) of the deer family. Deer are hoofed ruminants that have two large and two small hooves on each foot. There are 43 different species of deer. The smallest species

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#60 Why do birds migrate?

I learned this today. Birds migrate because of declining food sources and not because of the temperature drop over winter. Birds migrate along a north south channel. They generally use a route that gives them the most opportunities for rest and food on the way. Their paths are usually dictated by natural landmarks like mountains

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#54 Why can cats jump so high?

I learned this today. Cats can jump up to 6 times their length because of their powerful hind legs and their flexible joints and vertebrae. Cats can jump 6 times their length, approximately 180cm. It is obviously not fair to make a straight comparison, but a human would have to jump a little over 10m

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