Hypothetical Question: How to keep Dinosaurs

There was an outdated book on the subject a while ago, and since I've got back into paleontology recently, and I've just got a couple of questions for anyone who knows Dinosaurs a little better than I do:

Could Dinosaurs be tamed? If they co-existed with us? Is it possible that we could live in a "Dinotopia"-esque world, where such creatures live alongside us like modern-day animals?

If, hypothetically, Dinosaurs co-existed with us, would these possibilites:

Tyrannosaurus - Beast of war, used by generals and covered in gold/armour

UtahRaptor - Beast of Burden, like a mule or a horse

Deinonychus/Troodon - attack beast, used like hutning/herding dogs and guard creatures

Queztocoatlus - flying as sport

Triceratops - War beast

Elasmosaur - fishing animal for when boats fail

Are anything more than just flights of fancy by myself. Also, what Dinosaurs are the smartest? Are any of them near those door-opening Raptors from Jurassic Park, or is that just Spielberg ignoring reality again? If you wouldn't mind giving responses, I'd be interested to know. Thanks :D

That'd be great pets for kids, you forget to feed your dog, you get harped on by your parents, you forget to feed your T-Rex, he/she just eats you, now that's teaching 'em some responsiblity!

You are confusing reality and imagination. Steven Spileberg pretty well hit the nail on the head with Jurassic Park. But from the dinno's perspective, they would consider us "Delicious!"

Hun, I think you need to be asking yourself how to find the doctor's office instead.

No.