The difference between a lizard and a salamander is that a lizard is a reptile and a salamander is an amphibian. Reptiles live solely on land, while amphibians spend part of their time in the water. Hence amphibians need to be near a source of water while reptiles don't.Know More
The skin of a salamander is soft, permeable and lacks scales. Like other amphibians, salamanders secrete mucous over their skin to help it retain moisture. Some salamanders have potent toxins in their skin. They lay their shell-less eggs in jelly-like masses either in still water or in a moist place like leaf mold. The eggs hatch into larvae who live in the water and breathe through gills. As they grow, their lungs develop and they are able to leave the water and breathe air. Some salamanders, however, retain their gills even in adulthood.
Lizards have scaly skin that helps them keep in water. They don't need to live near ponds, lakes or streams, and many species of lizards live in deserts. Their eggs are amniotic and are protected by shells that are hard or leathery. When the eggs hatch, the young are miniatures of their parents and don't undergo metamorphosis. Lizard toes are clawed, which is not true for salamanders.Learn More
Reptiles have scales or scutes on their skin and claws on their feet; meanwhile, amphibians have moist, smooth or warty skin that lacks scales. Amphibian feet also lack claws. Reptiles lay eggs with leathery shells or can give birth to live young. Amphibians have shell-less eggs that need to be laid in a watery or moist environment to protect them.Full Answer >
Genus and species are part of the biological classification system for living things. A genus encompasses a group of species that are closely related. Species is the most specific level of scientific classification, which typically groups animals that are so similar that, when they breed, they produce fertile offspring.Full Answer >
According to Reference.com, there is no difference between a pollywog and a tadpole. Both words describe the larval stage of the toad or frog. These amphibians for the most part live in the water during this stage of their lives.Full Answer >
Endotherms produce their own heat; ectotherms rely on environmental heat. Most ectotherms are cold-blooded while most endotherms are warm-blooded, but there are exceptions. Mammals are endotherms, and reptiles and amphibians are ectotherms.Full Answer >