I sat down to watch Jurassic Park with my son just after he turned three. My wife thought that showed questionable judgement on my part but he absolutely loved it and instantly became thoroughly obsessed with dinosaurs. He’s almost 4 now and shows no sign of slowing down.

That doesn’t dispose of the question of my judgement - there’s some violence in that film so that’s not a universal recommendation.

Parenting is a total mystery.

EDIT: Just to say - kids go absolutely bananas for any of the scenes in either Jurassic World movie that feature a Mosasaurus.