"Let's all go buy burgenstocks and hug some trees"
Mentally and Physically: Cassie is a natural peacemaker. Cassie loves animals, some say more than she likes most humans. Cassie likes Jake, as in likes. Her best friend is Rachel.
Family:She lives with her parents, who both care for animals. Her mom works at the Gardens, an amusement park/zoo. Her dad runs the wildlife rehibilitation center out of the family's barn. She is an only child.
As an Animorph: Cassie is also the "best morpher," she morphs the fastest and has more talent for morphing than Ax. She always questions the moral issues of every risky mission the Animorphs take on. Cassie believes it is wrong to morph sentient species, and even felt bad about morphing dolphins.
Cassie's books are #4 The Message, #9 The Secret, #14 The Unknown, #19 The Departure, #24 The Suspicion, #29 The Sickness, #34 The Prophecy, #39 The Hidden, and #44 The Unexpected.