i decided to make a related species to my take on bäckahästar, these guys are loosely based on "capricorns"/sea-goats and unicorns i suppose... they are like shetland pony size i think. but yeah this guy is one of those, and he shapes stones to be comfortable for swallowing, and also decorates them for cultural/religious reasons - both bäckahästar and sea goats in pareidolia swallow stones in order to control buoyancy in water, so its a pretty important occupation for them!
but yes also because they are related to bäckahästar they are not actually a goat or a bovid at all, but a cervid. the horn is just a very weird antler