After being attacked by drowned, Axolotls will stay in it's slanted angle, even after regeneration has ended.

To reproduce, spawn an Axolotl and a Drowned, then watch. The Drowned should attack the Axolotl, causing it to play dead. After regenerating, the Axolotl will stay slanted.

Images Axolotl_1 and Axolotl_2 show the before and after effects, respectively.