Herdwick sheep were probably introduced by Norse settlers during the Viking invasions (10th-11th c.). The husbandry of the sheep has been a large factor in shaping the culture & terrain of the Lake District. Beatrix Potter was involved with breeding Herdwicks & bequeathed 15 farms to the National Trust. Per her instructions all continue to graze Herdwick flocks.
Even more rare than the liger & tigon, the liliger cub is the offspring of a male lion with a female liger. These cubs were born to a zoo in Russia and have a unique coat pattern. They aren’t stripes like a tiger, but almost dots like a leopard.