In reply to Al Evans: This from an exciting site called " Get Walking !" ...
Walkers in the Peak District have occasionally been surprised to see a red-necked wallaby hopping around the countryside. These marsupials, natives of Tasmania, are about the size of a collie dog and have a grey-brown body and a kangaroo-like pouch, in which they carry their young. But, sadly, it seems that the days of the Peak District Wallaby are over.
The red-necked wallabies had been living and breeding on the Staffordshire moors since the 1940's. They came from the estate of Captain Courtney Brocklehurst, a Staffordshire landowner, who had a private zoo at his home, Roaches House near Buxton. When Capt Brocklehurst was killed in the Second World War, war regulations demanded that his zoo had to be disposed of, and the wallabies were turned out of the zoo and allowed to roam wild in the Peak District.
For many years they thrived in the countryside, and their numbers were believed to have reached around 50 by the early 1960's. But then, sadly, the harsh winter of 1962-1963 had a drastic effect on the wallabies and by 1988, there were only about 14 of them. By last winter, there were only two females left. Now it is believed that they have probably died too, and the wallaby is extinct in the Peak District. Experts have put their extinction down to dogs, road casualties and human disturbance.