The trade-off of this hardy external layer is that it doesn't expand; it remains relatively inflexible and constricts the ...

Reptiles in open habitats evolved brighter colors over time. This helped them reflect sunlight and survive climate change.

Reptiles are air-breathing vertebrates covered in special skin made up of scales, bony plates, or a combination of both. They include crocodiles, snakes, lizards, turtles, and tor- toises.

Cornified scales of reptiles increased their capacity to live in terrestrial environments. The stratum corneum is very thin, with little keratin. Skin is used for gas exchange. Thick keratin layer ...

Most reptiles are covered in dry, scaly skin. They can be found living in both water and on the land. There are six species of reptile which live in the UK. They are rare and very shy so spotting ...

What are amphibians and reptiles? Amphibians are frogs, toads, newts and salamanders. Most amphibians have complex life cycles with time on land and in the water. Their skin must stay moist to absorb ...