True or False: Nature

Explanation: TRUE! Due to their mass (5-7 tonnes) and the straight structure of their legs, elephants are physically incapable of leaving the ground with all four legs at once. Rhinos, hippos and sloths share this trait.

Explanation: FALSE! Penguins are found in South Africa, New Zealand, South America, and even the Galápagos! The Galápagos penguin lives near the equator.

Explanation: TRUE! Flamingos are born with gray-white plumage. Their pink color comes from carotenoid pigments in their diet (shrimp, algae).

Explanation: FALSE! Giraffes sleep very little (30 min to 2 hours per day) and often in short naps. They can sleep standing but also lying down, with their head folded on their body.

Explanation: TRUE! Slugs have 4 retractable tentacles on their head: the upper pair carries the eyes, the lower pair is used to smell and taste. These tentacles can regenerate within a few weeks if damaged.

Explanation: FALSE! The Siberian tiger is the largest feline, reaching up to 300 kg and 3.3 m long. Male lions rarely exceed 250 kg.

Explanation: TRUE! Dolphins practice unihemispheric sleep: one side of the brain sleeps while the other stays awake. This allows them to continue breathing and watch for predators.

Explanation: FALSE! Polar bears don't truly hibernate (only pregnant females do). Bears in warm regions like the sun bear don't sleep through winter at all.

Explanation: TRUE! Studies have shown that crows recognize human faces and remember for years those who threatened them. They can even pass this information to their offspring!

Explanation: FALSE! Only honeybees die after stinging a mammal (their stinger gets stuck). Other bee species and wasps can sting multiple times without dying.

Explanation: TRUE! In English, a group of flamingos is called "a flamboyance". This poetic term refers to their dazzling plumage and spectacular gregarious behavior.

Explanation: FALSE! Snakes have no external ears but they "hear" vibrations through their jawbone and body. They also perceive certain low-frequency sounds.

Explanation: TRUE! Studies have shown that cows form strong friendship bonds. Their cortisol level (stress hormone) increases significantly when separated from their friends.

Explanation: FALSE! Frogs absorb water directly through their skin! They have a special area on their belly and thighs called "hydration patch" that absorbs water through osmosis.

Explanation: TRUE! The "Wood Wide Web" is a network of mycorrhizae (fungi) connecting tree roots. They can thus exchange nutrients, water, and even warning signals against parasites.

Explanation: FALSE! Cactus spines are actually modified leaves! They evolved to reduce water loss and protect the plant. Some cacti even have temporary true leaves.

Explanation: TRUE! Squirrels hide thousands of nuts but forget about 25% of them. These forgotten nuts germinate and become trees. A squirrel can thus plant several thousand trees in its lifetime!

Explanation: FALSE! Their slowness is a survival strategy! Their ultra-slow metabolism allows them to survive with very little food (low-nutrition leaves) and avoid predators that detect movement.

Explanation: TRUE! Sea otters sleep on their backs at the water's surface. To avoid being separated by currents, they often hold hands. So cute!

Explanation: FALSE! Dogs see in color but differently from us. They have 2 types of cones (instead of 3) and mainly perceive blue and yellow. They see the world like a red-green colorblind person.