Animals

Despite the efforts to preserve the species, they are endangered by inbreeding.

Fleas are successful acrobats.

The Arabian oryx is the first species to go from being classified as extinct in the wild to endangered by the world authority on endangered species, the International Union for Conservation of Nature.

Paleontologists determined Pterodactyls were not covered in feathers.

Albino varieties of Boa constrictors also exist.

Jellyfish is in fact a name of a free-swimming phase in the Medusozoa life cycle.

Male guinea pigs reach sexual maturity in 3-5 weeks, females similarly - they can be fertile as early as 4 weeks old.

They are predatory and often hunt from concealment.

After conception female wolf spiders carry egg sacs for 20 to 40 days depending on species.

They are very large amphibians.