Compare How is the life cycle of a mammal different from the life
cycle of an animal that undergoes
metamorphosis?

Differences between mammals and animals are:

• Animals could be either ectothermic or endothermic, but mammals are always endothermic.

• Only mammals have hairs on the skin out of all the animals.

• Only mammals have mammary glands and sweat glands out of all the animals.

• The most sophisticated heart and the circulatory system are present in mammals out of all the animals.

• Mammals have more complex living habits (e.g. human) than other animals.

• Number of mammals is only a fraction compared to the rest of the number of animals.

• Some mammals are capable of singing, but other animals are not.

these include the fossil fuels, oil, natural gas, and coal and nuclear energy. hope this ! ^.^

-ella