Snakes are often associated with egg-laying because it is a correct assumption. However, this fact cannot fully describe ...

For years scientists have known that some species of sharks, fish and lizards are capable of "virgin births," asexual reproduction known as parthenogenesis that occurs when unfertilized eggs develop.

Snakes are found on every continent except for Antarctica and can occupy a wide range of habitats, including forests, deserts, grasslands, and aquatic habitats in both rivers and seas. This diverse ...

A long-term study of copperhead snakes in a forest near Meriden, Conn., revealed that five consecutive years of drought effectively ended the snakes' reproductive output. A long-term study of ...