Dinosaurs replace their teeth throughout their life. And T. rex replaced all of their teeth every year.

Children have a great urge to learn about dinosaurs.

Most people looking for dinosaurs are looking for beautiful skeletons.

T Rex could not run.

Keratin can be very colorful, as we see in birds. We'd expect dinosaurs to be very colorful because they basically invented the characteristics we see in birds.

Almost all of my graduate students say that they got interested in dinosaurs because of 'Jurassic Park.'