Source: Böhringer Friedrich — CC BY-SA 3.0 at, Wikimedia Commons The Alpine Marmot: Six Months of Sleep in the Mountains High above the tree line in the Alps, the alpine marmot lives in a world where summer

Source: Charles J. Sharp — CC BY-SA 4.0, Wikimedia Commons Migratory Birds and the Magnetic Compass Within Each autumn, a European robin weighing less than 20 grams departs Scandinavia and navigates thousands

Source: USFWS Midwest Region from Midwest Region, United States — Public domain, Wikimedia Commons The Snowshoe Hare: Changing Coats and a Ten-Year Cycle Every autumn, the snowshoe hare of North America's

The Christmas Island Red Crab: A Migration Timed by the Moon On Christmas Island, an Australian territory in the Indian Ocean, the forest floor is home to tens of millions of bright red land crabs. For

The Gibbon: Songs, Territories, and the Acrobat of the Canopy The gibbon moves through the forest canopy by brachiation — swinging hand over hand beneath branches — at speeds exceeding 55 kilometers per

The Hammerhead Shark: 360-Degree Vision and Electric Panorama The hammerhead shark's distinctive head shape — the wide, flat cephalofoil that gives the family its name — is one of the most immediately

The Stoat in Winter: White as Snow, Sharp as a Blade The stoat is one of the most effective small predators in the northern hemisphere — capable of killing prey ten times its own size, sustaining pursuit

The Migratory Locust: When a Herbivore Becomes a Plague The desert locust is, in its solitary phase, a harmless grasshopper. It lives alone, avoids other locusts, is cryptically colored to blend with its

The Cone Snail: The World's Most Venomous Gastropod The cone snail hunts fish. This is remarkable enough for a snail — but the mechanism by which it does so is extraordinary: it extends a flexible,

The Tardigrade: Life at the Edge of the Possible In 2007, tardigrades became the first animals confirmed to survive direct exposure to open space. Attached to the outside of a satellite, they were exposed

The Pistol Shrimp's Snap: Physics at the Threshold The cavitation bubble produced by the pistol shrimp's snap reaches temperatures comparable to the surface of the Sun — roughly 8,000 Kelvin — for a duration

The Clark's Nutcracker: Spatial Memory Beyond Compare Every autumn, a small bird in the mountains of western North America harvests seeds from whitebark pine trees, carries up to 95 seeds at a time in

Source: Wikipedia The Raccoon: Dexterity, Memory, and Urban Genius The raccoon's front paws contain nearly as many sensory nerve endings as a human hand, with over 80% of the area in the part of the brain

Source: Wikipedia The Tarsier: The World's Largest Eyes Relative to Body Size If a human had eyes proportionally as large as a tarsier's, each eye would be roughly the size of a grapefruit. The tarsier's

Source: Wikipedia The Komodo Dragon: Venom, Strategy, and Apex Predation For decades, scientists believed the Komodo dragon killed through septicemia — bacterial infection from its bite, allowing it to

Source: Wikipedia The Shark: Six Senses in the Dark Ocean The more remarkable story about sharks is not aggression — it is perception. The shark navigates and hunts through a sensory system so comprehensive

Source: Wikipedia The Dung Beetle: Navigating by the Milky Way On a moonless African night, a dung beetle climbs atop its carefully rolled ball of dung, performs a brief rotational dance, then rolls in

Source: Wikipedia The Sea Cucumber: Liquefying Itself to Escape When threatened, a sea cucumber can partially dissolve its own connective tissue, becoming soft and liquid enough to squeeze through gaps

Source: Totti — CC BY-SA 4.0, Wikimedia Commons The Mudskipper: The Fish That Conquered Land A fish that climbs trees. A fish that fights territorial battles on land. A fish that digs burrows in mud and

Source: Charles J. Sharp — CC BY-SA 4.0, Wikimedia Commons The Peacock Spider: Eight Eyes, Eight Legs, One Dance The peacock spider is approximately 5 millimeters long. Its abdomen is covered with iridescent