Models of life history evolution typically assume a balance between the benefits of current reproductive activity and the costs to future reproductive success or survivorship, but empirical studies ...

In most vertebrates, males and females are believed to differ in terms of their investment in offspring. Dominance theory suggests that one way individuals of the sex with lower parental investment ...

For most animals, reproduction is straightforward: Some species lay eggs, while others give birth to live babies. But our recent research uncovered a fascinating mix between the two modes of ...

Climate change could see dozens of lizard species becoming extinct within the next 50 years, according to new research. The often one-directional evolutionary adaptation of certain lizard species' ...

LINCOLN, England, March 6 (UPI) -- Global warming could lead to extinction within 50 years of lizard species whose embryos are retained with their mothers' bodies, British researchers say. Dozens of ...

Despite their cold-blooded reputation, tegu lizards boost their body heat while on the prowl for a mate, biologists report January 22 in Science Advances. Like other ectotherms, South American tegu ...

Geckos and lizards, though similar, have distinct differences. All geckos are lizards, but not all lizards are geckos. Geckos are typically smaller with unique toe pads for climbing, nocturnal habits, ...

Climate change could lead to dozens of species of lizards becoming extinct within the next 50 years, according to new research published today. Globally it has been observed that lizards with ...