What is the life cycle of animal species

Ammals, reptiles, amphibians, birds, fish, insects and other invertebrates--they each have their own unique way of reproducing life. There is an amazing variety of life cycles within the animal world. Surprisingly, only about 3% of all animal species give birth to live young as part of their life cycle.

The life cycle of an animal is the stages that it goes through on its way to adulthood. Mammals, reptiles, amphibians, birds, fish, insects and other invertebrates--they each have their own unique way of reproducing life. Each animal has its own uneque life cycle. Surprisingly, only about 3% of all animal species give birth as part of their life cycle.