Why don't the Bible/Quran mention the dinosaurs?

Imo for an agnostic or atheist the question of whether the universe was intelligent design or chance is the most important thing to discuss, and then if you decide that it wasn't randomness, then to ask the question of "which God is the true God, if any?"

???

personally, I am an atheist when it comes to religion, however, I don’t see why any religious text would need to mention dinosaurs? There are plenty of creatures that weren’t mentioned in The Bible/Quran which we know to exist today.

Given that the dinosaurs were the dominant lifeforms for hundreds of millions of years, and may still have been if not for a cataclysmic extinction event - it seems pretty clear that such a thing warrants a mention in a description of the origin and history of life on earth, even a brief one. After all, both the Bible and Quran mention an extinction event that didn't happen.
The reason they are not mentioned is because the authors had no knowledge of them.

Why would dino existence in any form warrant a mention when the bible is about humans and God, not all life forms in general. The animals that are specifically mentioned are used or have some relation to the humans (main character). If bible was a movie, animals would be listed as an extra who may get no name. Sheep #1.

Have you read the Bible? It mentions all sorts of stuff apart from God and humans, including catastrophic extinction events. The cataclysmic extinction event that ended the dinosaurs' rule of the planet certainly warrants a mention. Without it, humans may not even be here.


Poor analogy.
It's more like not mentioning aliens in a film about man's colonisation of space, including planets where aliens were once dominant.