I Learned This Today

#71 How do jellyfish survive without a brain?

I learned this today. Jellyfish don’t have a brain. They also don’t have a stomach, lungs, or a heart. They just have […]

I learned this today. There are different ways that animals can change their colors. Some of the ways take days and some […]

I learned this today. Bats can sleep hanging upside down because they need to use muscles to open their claws but not […]

I learned this today. Antlers are made of bone and can grow up to 1 inch (2.5cm) a day. Antlers are grown […]

I learned this today. Birds migrate because of declining food sources and not because of the temperature drop over winter. Birds migrate […]

I learned this today. Cats can jump up to 6 times their length because of their powerful hind legs and their flexible […]

I learned this today. An electric eel produces electricity in the same way that a battery does. Electric eels usually grow to […]

I learned this today. Cats appear never to blink, but they actually blink with a third eyelid, a nictitating membrane, which is […]

I learned this today. Hibernation is not the same as sleeping. Animals sometimes have to come out of hibernation to be able […]

I learned this today. Labradors are used as guide dogs because of their temperament, but also because of their size. Guide dogs […]