An alternative theory of dinosaur extinction says they were not wiped out by some earth catastrophe, but simply could not compete with the newly evolved animals - the mammals. Dinosaurs could not outrun, outjump, or outswim mammals when it came to catching food. Nor could they safeguard their nests and eggs from fast moving mammals, and gradually declined in numbers. All in all, dinosaurs were not sporty enough to compete with mammals and lost the evolution game.
Photoshop how dinosaurs COULD be great athletes who loved to play sports - show dinosaurs in any kinds of sports.
Many thanks to Tarkus for the themepost.