Matching Pairs Let's check knowledgeOnline version Match the appropriate description with the corresponding animal. by Karen Quintero 1 Amphibians 2 Reptiles 3 Mammals 4 A mammal is a 5 Birds 6 An amphibian is a frog They are warm-blooded, they nurse their young with milk and have fur cow or a dog They lay eggs. Their skin is covered with hard and dry scales They can fly, have wings and feathers they are cold-blooded,they can move out in water and land.