Ginormous Hatchin' Grow Dinosaur $7.99 Default Title - $7.99 Quantity This product is coming soon. Please fill in the form below if you'd like to pre-order this item! Just add water and watch your dino hatch. 4 different dinos, which one will you get? Recommended for ages 5 years+. Fully grown dinosaurs reach nearly 12" in size.