Nearly fell off my chair laughing. Nice pickup on the police box and dalek in the background, LOL.
Are you sure, begorrah, that the coow doesn't give Guinness instead of milk? It doesn't seem to have udders or any other appendages, so it is definitely a new breed visiting from outer realms, hahaha.
I've heard of genealogical mapping, but bovine cartography is a new one on me. Way to go !