Won't attack you unless you attack them first Ankylosaurus is basically a slow tanky dino when facing an ankylo ranged weapons are your best chance their high health pool means their hard to beat but even a basic bow and arrow can kill them if you can't fight then run they deal considerably high damage and can destroy your basic wooden shield in 5-9 hits of it's tail melee combat isn't advised but if you can manoeuver constantly and attack it's blind spot you got a chance