I call BS on the dogs for home security. Check online for the home security videos of dogs wagging their tails, seemingly enjoying the attention of a stranger. Unless they are specifically trained as security dogs, all sorts of things can go sideways, including the homeowner getting bit. Why do you think citizens aren't permitted to pet K9 police dogs.
It's a challenge to have a social, family pet, pull double duty as a security dog. Not impossible I suppose. Small dogs with big mouths will give warning when you are home. When you're not home, they'll happily escort thieves to your guns. I will say, delivering US Mail, the little buggers are the meanest, but I digress.
Outdoor lighting, dogs, and alarm systems all have their place, especially when you are home. But you just can't beat good old insurance for peace of mind. Aside from family heirlooms, good sporting goods insurance covers everything. I'm not talking about riders on your home owner's policy, too many pitfalls and drawbacks to those: increased premiums when you file a claim, agents who don't understand gun values, etc. Did you know that if you file a claim on your homeowner's insurance for any reason and it's denied, you are still placed into an industry-wide database, which tells other companies you attempted to file a claim?
Look up Historical Firearms, Eastern Insurance. I have no affiliation, but Jack (John) is easy to talk to, very informative, and their rates are the best I've seen. I have dogs, an alarm, and my safe was brought in by 5 piano movers, who nearly killed themselves doing it. Still, my peace of mind came when I bought the insurance. YMMV.