Animal – 20th Century Science

Why can squid squirt ink?
Why can some shellfish grow among rocks?
Why does an ant die when you put a little salt on it?
Do earthworms have lungs?
Why do wooden ships sailing on the sea get infested with woodworms?
Why does the ocean sometimes glow?
Why could ancient apes evolve into humans, but modern great apes cannot evolve into humans?
Why can monkeys eat voraciously?
Why do monkeys like to pick fleas off their companions?
Why are monkeys good at imitating?
Why do horses’ ears often twitch?
Why do cows and sheep keep chewing even after they have finished eating grass?
Why does playing music for cows increase milk production?
What is the use of the stripes on a zebra’s body?
Why are the eyes of a donkey grinding mill covered?
Why can hippos submerge in water for long periods?
Why is the horn of a rhinoceros unique?
What kind of animal is a ‘four-not-like’?
Why can camels find water sources in the desert?
Why do giraffes have particularly long necks? Why can they go for longer periods without drinking water?
Why do sika deer have spots on their bodies in the summer but not in the winter?
Why are most elephants in circuses and zoos female?
Why do male deer grow antlers while female deer do not?
How do elephants’ tusks and trunks grow long?
Why don’t you see the carcass of an elephant in the jungle after it dies?
Why are elephants afraid of small mice?
Why do elephants and rhinoceroses apply mud or sand to their bodies after bathing?
Why don’t elephants inhale water into their lungs when they use their trunks to drink?
Why do squirrels have especially large tails?
Why do some birds and mice share burrows or nests?
Why are bats not considered birds?
Why do mice gnaw on things and damage them?
Why do pet rabbits often have diarrhea?
Why do mother rabbits sometimes eat their own newborn rabbits?
Why shouldn’t you twist a rabbit’s ears
Why do rabbits have particularly long ears?
Why do whales gather in Antarctica every year?
Why is the sperm whale called a diving specialist?
Why do whales spout water?
Since whales breathe through their lungs, why do they quickly die when they are stranded on land?
Why do whales, with their exceptionally large bodies, prefer to eat small shrimp?
Why do dolphins swim particularly fast?
Why are mice afraid of sunlight?
Why don’t polar bears slip and fall when they run on ice? Why do they only live in the Arctic?
Why do beavers build dams?
Why do wolves love to howl at night?
Why do ferocious animals sometimes nurture human children?
Foxes are charming? Is this really true?
Why does the animal trainer carry weapons for self-defense, but still need to hold a whip?
Why can a yellow weasel eat hedgehogs?
Why can the dogs in the circus perform arithmetic?
Why aren’t the wild animals in the circus afraid of people?
Why is it not easy to catch mice when a cat’s whiskers are shaved off?
Why do a dog’s ears lie flat on the ground when they sleep at night?
Why is a dog’s nose often wet?
Why do dogs often circle their sleeping area before they sleep?
Why do desperate dogs jump the wall?
In the summer, why do dogs open their mouths and pant?
Why can dogs eat meat bones and cats eat fish bones?
Why do a cat’s eyes change three times a day?
How do hibernating animals know when spring is approaching?
Why don’t many animals suffocate when they hibernate buried in the ground?
Why don’t animals starve during hibernation when they don’t eat anything for the entire winter?
Why don’t ducks incubate their own eggs?
Why do Peking ducks need to be force-fed at a certain stage, and why is it necessary to pluck their feathers during this process?
Why can’t domestic ducks fly while wild ducks can fly?
Why do some chickens have no feathers on their bodies?
Why do chickens like to eat charcoal ash?
Why can’t you let the chicks out on a rainy day?
Why newly hatched chicks can eat immediately?
Why are chicks raised in early spring better than in other seasons?
Why do some chicks hatch with four legs?
Why is it more cost-effective to raise young hens compared to older ones
Why is one end of a chicken egg larger than the other end?
Why can using artificial lighting in winter increase egg production in hens?
Why do red-faced hens lay eggs?
Why do hens cluck after laying eggs?
Why do hens start brooding at a certain point in time?
Why do the tail feathers of the long-tailed chicken grow especially long?
Chicken first or egg first?
Why do rhinos have rhino bird?
Why can common tailorbird sew up leaves?
Why do parrots and starlings can learn human language?
Will the magpie really give good fortune?
Why do you call the woodpecker the carpenter in the forest?
Why do woodpeckers pecking at trees?
Why are the geese flying south often arranged in the shape of V and l?
Why does the peacock turn on the screen when it sees someone wearing a stern suit?
Why can some bird’s nest be eaten?
Why do crossbills in pine forests take advantage of harsh winters to breed?
Why do seagulls chase sea wheels?
Why do pigeons fly long distances?
Where does the swallow flies across the sea to rest? What to eat to satisfy hunger?
Why can woodpecker climb green tree?
Why can’t the sparrow see things around at night?
Why can only penguins make their homes in antartica?
Why is northeast china big paradise for migratory bird?
Why do birds sleep on the branches without falling?
Why do birds sing？
Why do migratory birds migrate？
Why are the birds especially active after the rain？
Why do bird have various mouth shapes？
Why do many animals gather？
Do you know why some small animals can forecast the weather？
Why was the turtle back wet before rained？
Why does a tortoise have a hard as a stone carapace?
Why do the residents of the sericulture area respect the Colubrid snake so much?
Why does rattlesnake tail sound?
Why do turtles snakes and other animals can avoid or eat less food for a long time?
Why does the cobra dance when it hears the sound of music?
Why do venomous snake have natural enemies?
Reptiles are all eggs, and snakes are also reptiles. Why do they give birth to small snakes?
Why do sea turtles cry?
Why do you want to hit seven inches when you hit a snake?
Why snake can crawl without feet?
Why twist the snake upside down and shake it a few times and it died?
Why can a snake swallow a mouse much larger han its head?
Why can hibernating hedgehogs wake up in cold air, but frogs cant?
Why does the frog chin become bulging and shrinking?
Why is the frog cry so loud on rainy days?
There is a pile of dead flies next to the frog, why does he still starve to death?
Why can amphibians live in water and on land?
Why do loach fish spit bubbles？
Why do the fish under the ice gather around the ice hole in winter？
Why does eating puffer fish poison people？
Why do eels that grow in freshwater swim to the ocean when they spawning？
Why are the little seahorses born and raised by male seahorses？
Why do flounder eyes grow on the same side？
Why do eels discharge electric？
Why are there two small rocks in the head of yellow croaker？
Why is the eels so slimy?
Why do some ocean glow?
Why is the Red Sea red color?
How can marine fish glow in a dark place?
Why does the body of the puffer fish swell?
The small Tilapia fish ran into the female mother mouth, why wouldn’t they be eaten?
Why are the fish in the northeast region so fat?
Why are herring, grass carp, silver carp, bighead carp and other fish mixed in one pond?
Why do fish migrate?
Why are there a lot of fish in some caves?
Why do some fish die after spawning?
Why are there strange-shaped goldfish?
Why put some water plants in the goldfish bowl?
Why use clean sand to filter water to raise goldfish, but they die?
Why can you tell the age of the fish by looking at the scales?
Why do most fishes have their abdomen upward after death?
Why can fish see the front, back and above objects at the same time without turning around?
Why are there no live hair tail and yellow croaker in the market?
Why do fish sometimes jump out of the water?
Why do fish scales sparkle?
Why can the fish stop in the water?
Many animals winter hibernate. Why do sea cucumbers summer hibernate?
When sea cucumber are evading the enemy, why dont they die if they throw their intestines away?
Why do africans call ants Ground Scavengers?
Why are there more ants in place with more aphids?
Why do ants war?
Why is it easy for bees to find flowers they love?
Why don’t male mosquitoes suck blood?
Why do queen bees and ant queen have a particularly long lifespan?
Why are there so many mosquitoes before a thunderstorm or on a hot day?
In the summer, why do mosquitoes like to sting people in black clothes?
The flies exclusively in dirty places, why don’t they get sick?
Why do flies and mosquitoes have only a pair of wings?
Why do swimming pools have a lot of gadfly?
Why do male silkworms spit more than female silkworms?
Why is pieridae flying in the vegetable field?
Why is the front feet of the mole cricket particularly large, and back feet of the locust is particularly developed?
Why do butterflies have beautiful and lovely wings?
In the morning, why are butterflies flying awkwardly?
The locusts fell to the ground sometimes they flew aways without eating a bite of crops and sometimes they ate all the crops overnight. Why?
Why do locusts move in groups?
Why are termites the enemy of building?
Why dragonfly skimming water?
Why do dragonflies fly faster and farther than other insects?
Why are mantis is beneficial insects?
Why larvae have to molting?
Why do the blood of lower animals such as insects have no color?
Do insects have ears, Grow on where?
Insects vocalizing,what are they for?
Do insects have a nose?
Insects have no vocal cords, why they can make sounds?
How do spiders build nets between two trees that are far apart?
Why are the small bugs stuck on spider webs all empty shells?
Why do hermit crabs live in snail shells?
Why do prawns migrate in groups?
Why do crabs spit foam?
Why do crabs sometimes grow small one foot?
Why do mature crabs go to sea?
Why do shrimps and crabs change color?
Why snails have a saliva line where they crawled?
Why do the shells open after the clams are cooked?
Why the mussel will not starve to death if the mussel shell is closed for a long time?
How pearl is produced?
Why do people keep bleeding after being bitten by leech?
Why can earthworms change the ground?
Can earthworms sing, Does it have ears and eyes?
Why do jellyfish sting people, How does it look at thing?
Why is coral an animal?
What is Kirin in animal world?
Why did dinosaur suddenly extinct from the earth?