As they grow, they develop legs and lungs and begin to live on land breathing air like us. This amazing change is called metamorphosis. Amphibians play an important part in the food chain eating ...

This allowed contraction and relaxation of muscles of body wall, changing volume of thoracic cavity and allowing amphibian to suck air in and expel it. This is a reasonably effective respiratory ...

For instance, studies have shown that water-breathing vertebrates, like fish and larval amphibians, display a direct relationship between heartbeats and gill ventilation, controlled by specific ...

Browse 40+ dragons breathing fire background stock illustrations and vector graphics available royalty-free, or start a new search to explore more great stock images and vector art. Dragon fighting.

During the winter months, Maine’s reptiles burrow underground (most snakes) or beneath the water (most turtles) to avoid extreme cold temperatures and slow their bodies heart rate, metabolism and ...