Animals

After conception, a female lays yellowish eggs singly on a leaves' underside.

Sea lampreys belong to the class of Chondrichthyes, which make up a minority of all living fish. Of the nearly 35,000 species of fish, there are about 1200 cartilaginous species only.

An example of such a butterfly is the species Thyridopteryx ephemeraeformis, whose female never deve ...

This affliction causes a prolonged and painful erection in men that is in no way caused by sexual arousal. If bitten by these spiders, symptoms can last up to five hours.

This is unique feature among spiders, no other species carry spiderlings on their back. Despite of additional encumbrance female wolf spiders are still capable of hunting while carrying her babies.

Crabs and shrimps did not appear until the Jurassic (201 - 145 million years ago) and lobsters appeared in the Cretaceous (145 - 66 million years ago).

The visceral plover (Balaeniceps rex) is a species of bird in the visceral plover family (Balaenicipitidae).

Primarily, they feed on plankton but will nibble on algae. In fact, they are crucial in keeping the ...

The two subspecies separated some 250,000 years ago. Scientists suggest that they should be treated as separate species.