Each Jurassic World Mighty Little Biters collectible dinosaur evolves from cute to angry with one easy motion. Fidgeters will have great fun changing back and forth. Each toy is about 3 in. long and 3 in. tall and popular species are included like T-Rex, Velociraptor and Ankylosaurus. Even the packaging has "bite" marks. Each Mighty Little Biter is sold separately, subject to availability. For dinosaur fans ages 4 years and up, especially Jurassic World fans. Colors and decorations may vary.