Amphibians are vertebrates (which means they have a backbone or spine). They are ectothermic. Also known as “cold-blooded,” ectothermic animals cannot regulate their own body heat, so they depend on warmth from sunlight to become warm and active. If they get too hot, they have to find shade or a burrow to help them cool down. Source See pictures of Amphibians
Amphibians
Facts about Amphibians Credit