Senior 8 years. Chow Chow/Shepherd (Unknown Type) Mix Dog for adoption in New York, New York - Elsa. Elsa was used as a blood donor for several years at a vet practice. We can only imagine what she saw, heard, smelt, & experienced there. Then they were going to euthanize her! Rescue Dogs Rock said no way & added this hero dog to their family. She is now waiting there for a family to call her own.