What is different about a warm blooded animal and a cold blooded animal?

Warm blooded animals have internal mechanisms that regulate their body temperature, making them less dependent on the ambient temperature. Cold blooded animals do not have this mechanism and so are more directly influenced by the temperature of the space around them.

A warm blooded animal can be highly active in the cold, but requires much more food to maintain such an active metabolism.

Cold blooded animals slow down in the cold and become more active when it is warm. Their slower metabolism requires less food, so they can go for longer between meals.