T-Rex: You know what can kill me?
T-Rex: Smallpox!
T-Rex: Smallpox AND polio AND ebola AND plagues both black and bubonic, not to mention all sorts of colds that can become terminal. Also not to mention all the other sorts of plagues, ailments and diseases carried by POTENTIALLY EVERYONE I HAVE AND WILL EVER MEET.
T-Rex: BROS: ALL THESE THINGS CAN KILL ME, BROS.
Utahraptor: Experimenting with hypochondria?
T-Rex: Flirting with it, anyway!
Utahraptor: Well, remember that we've all got to die of something, and a lot of the reason these diseases are getting a chance is we've beaten or managed so many other things that would've otherwise killed you long ago. Heck, a thousand years ago you'd be way more likely to die from Too Many Chomps From A Tiger than anything else!
T-Rex: Utahraptor, that is very compelling! I have only one question: what possible threat do you think a tiger could be?
T-Rex: We are GIANT DINOSAURS.
T-Rex: We are GIANT DINOSAURS who have taken the time to INVENT BULLETS.
T-Rex: Ooh! And soon, lazers!