In the dog breeding world, a “stud” is a male dog whose owner(s) agree is suitable to breed with another female dog. The female dog in this instance is described as a “dam” and she will need to be equally suitable for breeding. Suitability is usually determined after a full health screen with a vet — a suitable dog will be in good physical shape and free from any illnesses or faulty genes. Both mating partners must be selected for their conformation to the breeder’s breeding program.