This is a printable packet for students to use during an animals unit. There is a section for each animal type (mammals, reptiles, amphibians, birds, fish, and insects), and the students fill in sentences with facts about each animal group. The way I usually use the activity is as a way to introduce each animal group, and then as a study guide before test time. It could be used in one or both of those ways or as an individual or group assignment.