Throughout the world we have benefited from the voyages of men and women over local and international boundaries. We are however particularly indebted to the Spanish and Portuguese conquistadores for their generous offer of transcontinental travel in the 16th Century. Although we often travel in humans and sand flies we are also partial to voyages with other mammals, and dogs are one of our favourites. We got more than we bargained for when we boarded ‘Becerrillo’. Unbeknown to us, he was Poncé de Leon’s dog and took us to lands we had not previously explored.