What is the difference between aves and mammals?
Aves- 1. Aves are the class of vertebrates that are characterised by the presence of feathers and wings. All birds fall under this class. 2.The forelimbs are modified into wings for flight.. 3.. Birds lay eggs.. 4 Birds have long hollow bones that help them to fly. Mammals - 1. Mammals are a group of animals that have skin covered with hair or fur on their body. Mammals include elephants, tigers, lions, whales, primates, humans, dolphins, etc. 2. Mammals have mostly four limbs that are modified for walking, climbing, running, etc. 3. Mammals are the animals that give birth to its young and have mammary glands that secrete milk. 4. Mammals have thick and dense bones filled with bone marrow.