Two cavepeople enter someone's cave to find the person attacked by a reptile. The reptile has its mouth around the person's ankle.
If someone was bitten by a reptile then they would be bleeding.
Why did the reptile bite the man?
Somebody carve 911.
scene: cave description: Two cavepeople enter someone's cave to find the person attacked by a reptile. The reptile has its mouth around the person's ankle. uncanny: If someone was bitten by a reptile then they would be bleeding. entities: Dinosaur, Caveman. caption: Somebody carve 911.
The person with the dinosaur attached to their leg is in immediate medical danger due to the bite --- in the modern world, such a dangerous occurrence would be responded to by calling 911 for emergency medical help, but here, there are no telephones, and communication happens instead via carving into walls (though, it's unclear exactly how carving 911 would lead to medical help arriving).