I love Rottweilers, and Dobermans, too, and have rescued them over the years. We recently lost our eleven-and-a-half-year-old Rottie, Nala. She was a wonderful dog. Our five-year-old female Doby, Kiara, is such a great dog. We taught her to swim, and she loves going on our boat and jet-skis, although she only goes without her bright yellow life vest when we are close to shore.