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!
The life expectancy is 12-14 years but with proper care, they can live much longer. A family friend had 2 Borders on his farm. The female lived to 14 years and the male is still going at 17 years old! Our Border Collie is currently 14.5 yrs old and has aged drastically over the past 8-12 months.