Definition: Amphibians are a group of animals characterized by having moist skin, one body segment with gills for breathing, and two or more sets of limbs that move independently but can share joint motion. This group includes frogs, snakes, lizards, turtles, and some birds. Definitional details: Amphibians have moist skin (bile) and are not true fish (no heart). Their bodies are split into separate segments called gills.
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