They were soon crossbred with Alaskan huskies, hounds, setters, spaniels, German Shepherds, and wolves. The difference in weights between Setters and Pointers does not justify separate breeds. This was also restricted to setters and pointers. It was only open to setters and pointers. The AKC registered Irish Setters in a myriad of colours. Other ancestors include the Gordon and Irish Setters. There are also traditional bone setters and birth attendants. Irish Setters thrive on constant human companionship. These people are called route setters or course setters. Irish Setters enjoy having a job to do. She said that she grew up with four red setters and a Labrador. As many as 50% of Gordon Setters may be carriers. All the setters entered were black and tans (Gordons). Initial incubation is done in machines known as "setters". Several setters appear in more than one paper.