Ichthyosaurs!!!

Smart, yes, playful, possibly. It would be interesting to see a show with those anyway.

Yeah they might be playful and smart.They can put a show in Jurassic Park that I would see!

they are Smart and Cheerful, i'd love to seen them in one of the Scene In JP4.

but also you have to think that the Ichtyosaurus is A Predator, so think about it.