Viagen Pets Browse All Authors Famous Quotes by Viagen Pets The new puppies and kittens will be the same sex as the donor, but just as it is in nature, may have slight phenotypic differences, such as different markings due to natural epigenetic factors. this has been demonstrated across many species. The current age of the donor pet does not have any impact on the ageing of the new cloned pet. Viagen Pets tech