Your dog could carry a spare key for you. This works with a dog that stays outside or a dog with a pet door. Simply attach a spare key to your dog's collar (in a secure and non-visible place, of course) so that you'll be able to retrieve it if you need it.
Keep your most valuable possessions inside your walls. You needn't tear down your walls to do this. Many places around your house have areas that are already pre-cut. If you have an electric socket you do not use, hide valuables behind their covers.
Having read this article, you have lots of good information to choose from. Make good use of what you have learned. The tips provided here can help you make the decisions you need