[Trivia] Do you know the answers? A roundup of animal quizzes

8 types

Humans are classified into four blood types in the ABO system, but dogs are classified by the DEA (Dog Erythrocyte Antigen) system. At present, eight DEA types are recognized, though further research is ongoing. Incidentally, dogs’ blood types are very complex with many patterns, so it’s difficult to judge personality based on blood type the way some people try to do with humans.

four

Sheep are called ruminants, like cattle and goats, and they have four stomachs. When you see them on farms or in zoos, they’re always chewing, right? That’s because they bring the grass they’ve already eaten back up from their stomach to chew it again, which helps them digest it better.

38 years old

According to Guinness World Records, the longest-lived cat in the world reached 38 years and 3 days, which is said to be equivalent to an astonishing 170 years in human terms. Compared to the average cat lifespan of about 15 years, that’s extraordinary. The cat recognized as the longest-lived in history was Creme Puff, who lived with a family in the United States. She was a female cat and, in addition to commercial cat food, reportedly ate eggs, bacon, asparagus, and broccoli!

about 250 types

Monkeys belong to the order of primates and live mainly in tropical regions. Gorillas, orangutans, and chimpanzees belong to the order Primates and the family Hominidae, and of course we humans are also in the family Hominidae. In Japan, only the Japanese macaque lives in the wild, and it’s said to be the only monkey in the world that bears the name of a country.

5 items

Giraffes are the animals with the most horns; both females and males have five. Behind the two obvious ones, there are two small horns, and then one bump-like horn between the eyes. The composition of horns also varies: reindeer have horn-like structures that are bone, rhinos have keratin—that is, densely packed hair—and giraffe horns are bone covered with skin.

sleep standing up

Wild elephants sleep while standing, dozing lightly so they can easily flee from predators. However, calves protected by adults and elephants living in zoos without natural enemies are said to sometimes sleep lying down. Their total sleep time is about 3–6 hours per night, repeating several sleep bouts of 30 minutes to 2 hours—surprisingly short, isn’t it?

Stamping

The behavior of supporting their body with their forelegs and thumping the floor with their hind legs, known as “stamping,” is called “ashi-dan” (foot thump) among rabbit enthusiasts. It is said that in the wild, rabbits did this to warn their companions when they sensed danger, and that instinct remains in domesticated pet rabbits today.