What would a dinosaur have to do to the ankylosaurus to wound it up?

Answer 1

Ankylosaurus was so covered in bony armor on its back, head, neck, tail, and sides that it would have been virtually impossible for a large theropod to even reach a vulnerable part of the Ankylosaurus. Reaching a vulnerable part of the Ankylosaurus would be made even more difficult by its tail club, which would deliver lethal blows to an attacker.

To wound an Ankylosaurus, a dinosaur would have to attack its underbelly while avoiding blows from its tail club.

Ankylosaurus's belly was less than three feet above the ground, so even fitting under it to attack it would have been difficult for any predatory dinosaur of sufficient strength to injur its underbelly. Another means of wounding an Ankylosaurus would be to flip it over, although that would be impossible on a practical level for any dinosaur, even Tyrannosaurus. The last method for wounding, even killing, an Ankylosaurus would be to force it off of a sufficiently high cliff, because when it fell its bones would be broken by its own weight. However, it would be very difficult to do that, because the Ankylosaurus would simply stand its ground and defend itself with its tail club.

Ankylosaurus was so formidable that fossil evidence suggests they were almost never attacked by predators.