Amphibians are those cold-blooded vertebrates that live on land and in water, have moist and smooth skin lays eggs that are not surrounded by membranes.

Arthropods are invertebrates which have paired jointed legs, exoskeleton and segmented bodies. Insects are invertebrates that have a body divided into three parts (head, thorax and abdomen). They have six jointed legs and live on land and in water.

Birds are those warm blooded vertebrates that have feathers and wings. They lay eggs and have two legs.

Fish are cold blooded invertebrates that live in water. They have scales and fins, and lays many eggs.

Mammals are those warm blooded air-breathing vertebrate animals that are categorized by their hair, three middle ear bones, and the mother nurse their young ones with milk.

Mollusca are a large cold blooded phylum of invertebrate animals having about 85000 recognized species.

Reptiles are those cold blooded air-breathing vertebrates, which are neither birds nor mammals, that lay eggs which are membrane-protected and fertilized within the mother’s body.