Distinguishing between snake and lizard eggs involves observing size, shape, texture, and nesting habits. Snake eggs are larger with leathery shells, laid in clutches in humid spots. Lizard eggs are ...

"These results bring us closer to unraveling the mechanisms." Scientists discover concerning changes in lizards: 'We are ...

Q. When we studied high school biology, our teacher said more than 99% of animals lay eggs and only a few give live birth. That percentage seems too high. Humans, dogs, cats and cows are ...

Jars of tiny platypus and echidna specimens, collected in the late 1800s by the scientist William Caldwell, have been discovered in the stores of Cambridge's University Museum of Zoology. Jars of tiny ...

Live birth has evolved from egg-laying ancestors multiple times independently. The European common lizard, Zootoca vivipara (pictured here), is a rare example of a vertebrate with populations that are ...

A female casque-headed iguana produced eight hatchlings during the last week of August in a so-called "virgin birth". It is ...