[For Seniors] Fun 3-Choice Animal Quiz! Introducing Questions Full of Surprises and Discoveries

nose

The hole on top of a dolphin’s head is called a blowhole, and it corresponds to what we would call the nose. Since dolphins are mammals like humans, they need to come up for air to survive in the water. They breathe by exhaling and inhaling through this blowhole.

About 20 minutes

In the wild, giraffes can’t sleep for long stretches at a time because they need to protect themselves from predators. Their total daily sleep averages only about 20 minutes, which is remarkably short. Incidentally, they sleep standing up, staying constantly alert so they can detect danger and flee immediately.

there is / to exist / to have

Owls have ears and can distinguish sounds well even in quiet places. Although it’s hard to see, they have ear openings under their feathers, and their left and right ears are offset, allowing them to accurately determine the direction and distance of sounds. By the way, the “ear tufts” on top of their heads aren’t ears—they’re decorative feathers.

22 hours

Eucalyptus leaves, which koalas eat, contain toxins. It’s said they need to sleep for long periods to digest those toxins in their bodies.

hippopotamus

Hippos don’t have sweat or sebaceous glands, so their sweat is different from the colorless, transparent sweat humans produce. A hippo’s sweat is a bit viscous and starts out clear, but gradually turns red. This red “sweat” is said to protect them from sunburn and bacterial infections.

To hear better and to let heat escape

Long ears are a rabbit’s trademark, aren’t they? I’ve heard that these days they’re often kept as household pets. Their long ears help them hear well and release heat. The ears have many blood vessels, and when wind hits them it cools the blood, helping prevent their body temperature from rising.

turtle

It’s known as the longest-lived turtle in the world, said to have been born in 1750 and to have lived until March 2006. That far exceeds the average human lifespan, doesn’t it? It would be great if, as medicine continues to advance, humans could also live long and healthy lives.