“Can’t you come and stay with me?” said Danny. “We could have fun.”
“No ,” said the dinosaur. “I’ve had a good time – the best I’ve had in a hundred million years. But now I must get back to the museum. They need me there.”
“Oh,” said Danny. “Well, goodbye.”
Danny watched until the long tail was out of sight. Then he went home alone.
–Danny and the Dinosaur by Syd Hoff
A few links about dinosaurs: