Originally from http://securitycan.com/how-burglars-get-in-house-ways/
If you must have one, it needs to be as small as possible and installed far enough from your door’s lock.
Consider installing an electric powered dog door, which only opens once the pet?fs collar (designed with a signaling device) comes nearby the door. It also keeps stray animals out, although not only does the doorway keep burglars out.
More at Burglars through Dog Doors