Good for mammals or other animals that follow the pattern: baby, young, adult.
I used this as part of a student research project. They had to research animals and find the names of their young. They've already done a lot of work with life cycles, so now they must create their own life cycle for their animal based on what they know.
This sheet is just to collect their knowledge of the life cycle before they make a bigger, better version to present to the class.