Giant crab. (Dark Souls 3)

There are large crabs in the "Forest of Torment" location. Does any of you hunt them? Once miraculously killed one - in the forest. The other is in the poisonous forest. They gave it around the ring. What else can fall from them? Enraged, infections. Killing is very problematic and takes a long time. And most often - they exhaust and restore health. Although he himself saw and at the very times two or three it turned out to stun them, as it were.