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!
So since it is a bit more complicated than multiplying by 7 we have a fun Dog Age Calculator that will figure it out for you. You can use it to see how old your Miniature Schnauzer would be if she turned into human one day or you can calculate how old you would be if you were turned into a dog. LOL! dog years.