Firebox has 3D dinosaur cookie cutters available for pre-order. Each set of cookie cutters makes three cookies that are assembled together to make the whole dinosaur cookie. The dinos available include Triceratops, Stegosaurus, Brachiosaurus and T-Rex. The cookies cost $13 and can be found here
If you prefer 2D dinosaur cookie cutters, then Foose Cookie Cutters has several tin dinosaur cookie cutters available here
for $2.29 to $2.95 each. They include a trycerotops, spinosaurus, camptosaurus, pterodactyl, apatasaurus and more. Foose also sells a set of 7 for $14.95.
Photos: Firebox (top)/Foose Cookie Cutters (bottom)