Animals

Friday, 1 May 2026
27 facts about turtles
27 facts about turtles
The only vertebrates so armored
The first turtles appeared on Earth at the end of the Permian about 240 million years ago. Although the first ones had neither plastron nor carapace, ...

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Salamanders
Defense mechanisms
They share a common characteristic - when in danger, both lizards and salamanders can shed their tai ...
Clownfish
When clownfish lacks anemone, it can occupy soft coral or large polyp stony coral.
Sometimes they even prefer those corals over anemones. This happened in our editorial reef tank when ...
Quokkas
Rottnest Island owes its name to the population of quokkas.
Willem de Vlamingh, captain of the Dutch fleet, upon arriving on the island in 1696, thought quokkas ...
Dolphins
Dolphins use echolocation.
This is how they find their way in the environment around them. By emitting high-frequency sounds, t ...
Guinea pig
Commonly referred to as a guinea pig, it is a house cat (Cavia porcellus), a species of medium-sized domesticated rodent in the Caviidae family.
The caviidae family includes 6 genera with 20 species. Modern living representatives of the Caviidae ...
Hippopotamus
Hippos reproduce and are born in water.
Females reach sexual maturity at 5-6 years and males at 7.5 years. Copulation of the pair occurs in ...
Lemon shark
Lemon sharks do not have known natural predators.
Their pups tend to fall prey, however, to other sharks.
Brazilian wandering spiders
Even if the Brazilian wandering spider is brought to Central Europe and escapes into the wild, it has no chance of survival.
These spiders require high temperatures, which the European climate cannot provide for them. 
Fleas
Fleas are holometabolous.
They undergo all four stages throughout their life cycle: egg, larva, pupa, and adult (called imago).
Alligator snapping turtle
It is native to the United States.
It is primarily found in southeastern parts of the U.S. in freshwaters flowing into the Gulf of Mexico.