Wildlife

Texas rattlesnake, also known as the western diamondback rattlesnake (Crotalus atrox)

Biologist Explains How Does a Rattlesnake's Rattle Form?

The rattlesnake uses its tail rattle to draw attention and warn others. But how exactly is the rattling sound produced?

Wild Beauties Leopard or Jaguar? How to Tell the Spotted Wild Cats Apart

Leopard or Jaguar? Both wildcats are difficult to distinguish, but there are some differences.

Native Black Birds Raven or Crow? How to Recognize the Difference

What actually distinguishes ravens from crows? PETBOOK asked an expert and provides insights into the world of corvids.

The homosexual Humboldt penguins Juan (left) and Carlos (right) are pictured in their enclosure at Hagenbeck Zoo in Hamburg on April 12, 2016.

More Common Than Expected Queer Behavior Observed in 6,000 Animal Species

Queer behavior in animals is much more common than previously thought. It occurs in one form or another in over 6,000 species.

Garden dormouse (Eliomys quercinus) foraging at night in the forest

Endangered Bilchart Garden Dormouse Named Garden Animal of the Year – Why This Is an Important Sign

In this year's election for Garden Animal of the Year, the garden dormouse (Eliomys quercinus) emerged as the clear winner.

Hidden Features Why Is a Squirrel's Tail So Bushy?

Squirrels are known in the animal kingdom not only for their climbing skills but also for their extremely bushy tails, which offer them many advantages.

Is this a belching contest or a laughing contest? Who really knows for sure...

"Comedy Wildlife" The Funniest Wildlife Photos 2025

In 2025, the "Comedy Wildlife Photography Awards" will once again honor the year's funniest wildlife photos!

Pink Color, One-Leg Stand, … Do Flamingos Feed Their Young with Blood? 8 Fascinating Facts About Flamingos

Flamingos are fascinating animals known for their complex social behavior, synchronized courtship dances, and exceptional parenting.

A stone marten sitting on a car tire, surrounded by chewed-up car cables.

Behavior Explained The Curious Reason Why Martens Chew Through Car Cables

Each year, more than 200,000 cases of marten damage to vehicles are reported. But why do car cables fascinate martens them so much?

Rock Hyrax Hyrax Meme: Why This Animal's Scream Is Taking Over the Internet

Hyrax's charming call captivates social media, becoming a viral sensation. Learn more about the rock hyrax.

Powelliphanta augusta Observed For the First Time: This Snail Lays Eggs from Its Neck

For the first time, it has been documented how the Mount Augustus snail lays eggs from its neck—a milestone for the species.

A long-beaked echidna crawls on the ground.

Study "Extremely Rare Event" Explains Why There Are Three Egg-Laying Mammals

A new analysis reveals that all three egg-laying mammals descend from a common ancestor, challenging conventional evolutionary theories.

An octopus waves two arms through the air.

Four Different Arm Signals Cuttlefish Wave to Each Other to Communicate

Cuttlefish wave underwater. A new study provides surprising insights into complex communication through movement and patterns.

Moray eel with open mouth and cleaner shrimp

Like in the Movie "Alien" These Eerie Fish Have a Second Jaw

Moray eels are inherently frightening. Few people know that some species have two sets of jaws equipped with sharp teeth.

Previously, it was assumed that age and external factors primarily influenced whether bees were more likely to sting. However, a new study reveals that the individual character of honeybees plays a significant role.

Individual Character Why Some Bees Are More Prone to Sting Than Others

Bees have individual personalities that determine how likely they are to sting — study

Deep-Sea Creature Giant Squid Filmed Alive for the First Time — and It's Tiny!

Marine biologists have filmed a live giant squid near the South Sandwich Islands for the first time—and it was tiny!

Biologist Explains Is There a Difference Between a Tarantula and a Bird Spider?

Is there a difference between a tarantula and a bird spider? Both terms immediately bring to mind a large, hairy spider.

Biologist Explains Beetles That Look Like Small Gold Coins? A Biologist Expalins the Effect

Beetles that sparkle like gold coins? Anyone seeing a picture of the insects for the first time may suspect that they are not real.

Lemur (Indri indri) on trees in the forest with open mouth

Study Shows Like Human Children! Even Young Lemurs Sing Off-Key

A new study shows that even young lemurs first have to learn to control their voice when they sing - just like human children.

Peruvian tarantula and Engmaul frog living together

Little-Known Phenomenon These Tarantulas Live in a Community with Frogs

Researchers document fascinating partnership between frogs and tarantulas living together in communities. PETBOOK presents the findings.

White-spotted smooth dogfish (Mustelus asterias)

So Such for Being Silent! Researchers Discover That Sharks Make Sounds for the First Time

Sharks were previously thought to be silent. A new study now shows for the first time that so-called "rig sharks" make conscious sounds.