The banner at the top is a detail from the stained glass windows in the church. The dog is an heraldic symbol of St Dominic. A legend tells that when his mother was pregnant, she dreamed that she gave birth to a dog, with a fiery torch in its mouth. It ran around the world, setting it on fire. There is also an old Latin pun. "Domini canes" means "dogs of the Lord", while "Dominicani" means "Dominicans". St Dominic was in fact named after St Dominic of Silos, sometime abbot of a famous Benedictine abbey near our saint's birthplace of Caleruega, Spain. The name "Dominic" means "the Lord's man."