Death: the real reason all the dinosaurs went extinct.
Death is a state of being that most often occurs when one's body ceases to live.
Death is usually caused by a wide variety of influences like falling from great heights, being shot by a gazillion bullets, or being attacked by toast.
Death is a very common element in JitteryDragon's YTPs. As such, JD's films are quite accurate, according to loads and loads of scientific evidence pertaining the harsh conditions of the prehistoric dinosaur culture and other shit like that.
As a rule, death isn't always given permanence as some characters eerily come back to life, even after they had been killed earlier on. This is usually due to the fact that they were not dead after they had died or that they happened to have an extra life.
Ducky (right) about to kill Petrie (left)