Indoors it can be housed in vivaria from 150cm long by 60cm deep by 60cm high, as a minimum for an adult pair. The sides of the cage should be opaque except for the front glass to give the dragon some sense of security. The dragon is likely to be very nervous and damage itself in cages made entirely of glass.
According to this model, a Bulldog will age an average of 13 years per human year whereas a Miniature Dachshund only ages about four years. Unfortunately they only calculated the 3+ year ratio for a handful of dog breeds, but this means that my 1-year old Border Collie, Scuttle, is about 10.5 in human years!
An average male collie weighs between 60 to 75 pounds and stands 26 inches at the shoulder. The female collie weighs from 50 to 60 pounds and is 22 to 24 inches at the shoulder. The sheltie runs from 13 to 16 inches tall at shoulder height and weighs from 20 to 25 pounds. The collie muzzle is longer than that of a sheltie. Both the rough collie and the sheltie carry a full, lush outer coat over a thick undercoat.