The mouth claws and feet of each dinosaur can be shaken flexibly of each dimosaur, kids can take off any part of the dinosaurs and even creat a new dinosaur with different parts of different dinosaurs. Easy to assemble without the need for special tools. These are a kind of educational tool for your child.These realistic dinosaurs is the best way to introduce your child to the wonderful dinosaurs' world,to take them into Jurassic period Our dinosaur building block toy for enhancing assembly ability of the kids,Improve child's intelligence, imagination and creativity. Made of ABS material, odorless, smooth without burrs, colorful and solid .GUARANTEED TIGHT FIT with classic size building bricks.