Amphibians like frogs and toads are a great way to observe metamorphosis. They lay eggs that develop into tadpoles, and then these tadpoles develop into froglets and toadlets until at last we have our ...

Stingrays give birth to live babies, but they aren't mammals. Learn all about these fascinating fish that live in oceans and ...

Nature is full of evolutionary selflessness. From deep-sea octopuses to certain marsupials, there are animals and insects that reproduce and then die, as their lives can be cut short because they ...

Once they near emergence, the female's thin skin bulges and pulsates with the struggles of the impatient froglets. The day ...

Researchers have newly described three extremely rare species of toad that leapfrog over the egg-to-tadpole stage and give birth to toadlets.

SAN FRANCISCO (KGO) -- Tens of thousands of people are watching a giraffe who's about to give birth. The animal adventure park in upstate New York is live-streaming from the giraffe's enclosure.

Similarities to the womb and placenta of female mammals indicate a response to common evolutionary challenges in pregnancy.

While many creatures lay eggs or give birth to live young in familiar ways, some have developed unique methods to protect their offspring. One such strategy is mouthbrooding, where parents carry and ...

How many offspring an animal can have depends on many factors, such as whether they're aquatic and how they get around. When you purchase through links on our site, we may earn an affiliate commission ...