Hares:-
"For Celts, the hare was taboo. You could not kill or eat it, except for the annual hare hunt at the Beltane festival. A female saint, St. Melangell, was always accompanied by a hare: hares were sometimes called hares have been styled St. Monacella’s Lambs, and were under her protection. In Co. Kerry it used to be said that eating a hare was eating your grandmother; and the penalty for killing a hare was to be struck with cowardice.
Anglo-Saxons also venerated the hare – but, again, ritual hare hunts were a feature of the spring festival, to the goddess Eostre.
https://www.ruthpadel.com/article/hare-hunted-hare-tamed-hare-now/