The spot on top of moms head is Lady Blenheim thump print. The story goes lord Blenheim was away at war, his wife was very worried about his safety. She had a pregnant cavalier that would always sit in her lap. Lady Blenheim had a nervous habit of pressing her thump on top of her dogs head. One day one of the husbands servants who was at war with him showed up at the castle. He told lady Blenheim the war was over her husband was safe and soon be home. The moment the good news was delivery her dog went into labor and the puppies where born with spots on top of their heads, from Lady Blenheim thump. Some breeders ask a extra $100 if puppy has the spot.