Davies, a friend of Russell's, wrote: 'Trump was such an animal as Russell had only seen in his dreams'. She was the basis for a breeding program to develop a terrier with high stamina for the hunt as well as the courage and formation to chase out foxes that had gone to ground. By the 1850s, these dogs were recognised as a distinct breed.An important attribute in this dog was a tempered aggressiveness that would provide the necessary drive to pursue and bolt the fox, without resulting in physical harm to the quarry and effectively ending the chase, which was considered unsporting. This line of terriers developed by John Russell was well respected for those qualities, and his dogs were often taken on by hunt enthusiasts. While considered mainly a hereditary disease, it can also be caused by diabetes, old age, radiation, eye injury or exposure to high temperatures.
n/a
n/a