Tested multiple times on new worlds without any other mods, issue seems to occur randomly to all sea bunnies whenever there is a fairly large amount of sea bunnies spawned in. Models revert to normal when closing out and reopening Minecraft, but will become vertical again after a short period of time.
Edit: Playing on the latest 1.20.1 version of this mod (crittersandcompanions-1.20.1-2.1.5.jar). Also, the natural spawn rate of the mob on it's own does seem to be enough to trigger this bug.
Tested multiple times on new worlds without any other mods, issue seems to occur randomly to all sea bunnies whenever there is a fairly large amount of sea bunnies spawned in. Models revert to normal when closing out and reopening Minecraft, but will become vertical again after a short period of time.
Edit: Playing on the latest 1.20.1 version of this mod (crittersandcompanions-1.20.1-2.1.5.jar). Also, the natural spawn rate of the mob on it's own does seem to be enough to trigger this bug.