Reptiles are not known to be the most social of creatures. But when it comes to laying eggs, female reptiles can be remarkably communal, often laying their eggs in the nests of other females. New ...

As a rule, reptiles lay eggs, while mammals deliver young through live birth. According to new research, however, this distinction is a bit more fluid than most assume—for reptiles, at least. Ancient ...

Many of us know snakes are ectothermic reptiles that regulate their body temperature behaviorally by using shade, burrows, ...

Despite what many of us were once taught in school, not all reptiles lay eggs. In fact, one of the most widespread lizards in Europe give birth to live young. Now, it seems these common lizards ...

The earliest reptiles, birds and mammals may have borne live young, researchers from Nanjing University and University of Bristol have revealed. Until now, the hard-shelled egg was thought to be the ...

Most people assume that only reptiles, fish, and birds lay eggs — after all, that’s what we learned in school. But nature always has a few surprises up its sleeve. Believe it or not, there are ...

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

Despite evidence that the earliest examples of creatures such as mammals and reptiles gave birth to live young, they actually may have laid eggs, a scientist argues. "These eggs are probably out there ...

WASHINGTON — The remains of a giant sea creature are providing the first proof that these prehistoric reptiles gave birth to their young rather than laying eggs. Plesiosaurs, which lived at the time ...

It’s an exceptional thrill and a privilege of living on our coast: watching a huge sea turtle lumber in from the ocean, lay her eggs on the beach and head back to the water. Green sea turtle season ...

New fossil egg discoveries show early dinosaurs and marine reptiles laid soft-shell eggs like those of turtles, snakes and lizards and not the hard shells of bird eggs today, according to a new study.