Free and Easy Dinosaur Growing Egg Have you ever seen a dinosaur hatch from its egg and grow? With this growing egg you can! Put the egg in a large bowl of water and after about 48 hours the egg will break open by itself and a dinosaur will hatch. To make the dinosaur grow bigger, leave it in the water for a few more hours. Take the dinosaur out of the water when you think it is big enough to play with. Specifications: Color: green Gender: boys Material: plastic Egg size: 11.5 x 7.5 cm Age: from 3 years