What would be a good way to secure a house from burglary other than home security system and window bars?

our home just got broken into. They took small electronics, but we are afraid they might come back. We are putting up bars on the windows, and considering getting an alarm system. What is another way to keep a home safe? Maybe also another more affordable way to keep a home safe?

I currently have a small labrador/pittbull mix but she is only 4months old. Still a little puppy.

Get an AK-47 or a very large house cat and paint him with tiger stripes. Or simply a Zebra. They'll be like what the Fu**?!?!?!?! THESE FREAKS OWN A ZEBRA. LET'S GET THE HE** OUT OF HERE!

P.S. I lost, you lost, we all lost the game. Screw the B&E