Zoology
14 questions tagged Zoology — spanning every one of the seven Ws.
Why Do Zebras Have Stripes?
The leading scientific hypothesis is that zebra stripes deter biting flies — experiments show that horseflies are far less likely to land on striped surfaces than solid-coloured ones.
Why Do Whales Sing?
Humpback whale songs are produced by males during breeding season, likely to attract mates, establish dominance, and communicate across vast ocean distances.
Which Animal Has the Largest Brain?
The sperm whale has the largest brain of any animal ever known to exist, weighing about 7.8 kg — roughly five times heavier than the human brain.
How Do Electric Eels Generate Electricity?
Electric eels generate electricity using specialised cells called electrocytes — thousands of disc-shaped cells stacked like batteries in series, each producing a small voltage that combines to deliver shocks of up to 860 volts.
How Do Chameleons Change Colour?
Chameleons change colour by actively tuning nano-crystals in specialised skin cells called iridophores — by spacing these crystals closer or farther apart, they change which wavelengths of light are reflected.
Why Do Cats Have Vertical Pupils?
Vertical slit pupils allow cats (and other ambush predators) to precisely control how much light enters the eye and to judge distance using stereoscopic depth of field — crucial for pouncing accurately in variable lighting.
What Is a Tardigrade?
Tardigrades ("water bears") are microscopic eight-legged animals, typically 0.1-1.5 mm long, famous for being the most resilient animals known — they can survive extreme temperatures, radiation, vacuum of space, and pressures that would destroy most life.
Which Animal Has the Strongest Bite?
The saltwater crocodile has the strongest measured bite force of any living animal at about 16,460 newtons (3,700 pounds-force) — roughly 10 times the bite force of a great white shark.
Which Animal Can Live the Longest Without Food?
Tardigrades can survive without food for decades in a desiccated cryptobiotic state; among active animals, the olm (Proteus anguinus, a cave salamander) can survive up to 10 years without eating.
How Do Bats Navigate in the Dark?
Most bats navigate using echolocation: they emit high-frequency ultrasonic calls (typically 20-200 kHz) and listen for the returning echoes to build a detailed "sound map" of their surroundings, detecting objects as thin as a human hair.
Why do birds sing?
Birds sing mainly to attract mates and to defend their territory, using a specialised vocal organ called the syrinx to produce songs that are partly instinctive and partly learned.
Which animal is the smartest after humans?
Great apes such as chimpanzees, along with dolphins, elephants, and certain birds like crows and parrots, are considered among the most intelligent animals, each excelling in different mental skills.
Whose discovery revealed that echolocation helps bats navigate and hunt in the dark?
Donald R. Griffin’s. In the 1930s, he and Robert Galambos helped establish that bats use ultrasound to orient themselves and find prey.
Whose work first explained how the platypus and echidna lay eggs even though they are mammals?
George Shaw’s and later zoologists’ work established that monotremes are egg-laying mammals. The platypus was described scientifically by Shaw in 1799.