Humans killed most of the dinosaurs. They were really the only real threat to the dominance of humans on this planet.
What's to say dinosaurs are extinct? How do we "know" they are? Plenty of animals have been "extinct" only to magically reappear after evolutionists claim they became extinct 34587634 trillion years ago.
Where are they hiding? Well, they don't have to be 100 feet tall. Most dinosaurs were small. There have been many sightings in the Congo and PNG. There are parts of this planet humans have not yet been. There are plenty of isolated murky lakes in the depths of the jungle where humans will likely never go.
If dinosaurs are still around, then obviously they carry a particular gene that gives them the tendency to avoid humans, and perhaps other predators.
Anyhow, creation theory does not hinge on whether dinosaurs are still around, so if they are not, I'm not too bothered.
