Made of environmental-friendly plastic, durable enough, safe enough for your children Keep high-quality as usual, The lower and upper jaws for joints connect has been redesigned and reinforced. Different from other Crocodile Dentist. The jaws will not loosen apart easily even when playing quite roughly The mouth snaps down when they press on the aching tooth and it may startle the kids, but is very funny. It is a great gift The crocodile head pressed upwards until a clicking sound, Crocodile's mouth will remain open state. The crocodile will bite you when you press one of the sore tooth, So hope you are the lucky one of the games that avoid pressing the sore tooth, And each time his sore tooth is different Develop children's response and coordination skills, suitable for children over 3 years old