The first stage of pregnancy in a dog is the dog going into heat, and the process from conception to birth usually lasts about two months. Learn about appetite changes and other hormonal issues that occur in a dog’s pregnancy withhelp from a certified dog trainer in this free video on dog pregnancy and care. Expert: Zephyr Clarke-Dolberg Contact: www.miami-dog-training.com Bio: Zephyr Clarke-Dolberg is a certified professional dog trainer in Miami, Fla. Filmmaker: Paul Muller