A few times. I bought a house in a poorer section of a small village that I lived in and the day we moved in, there was nowhere to put the bbq (it was only a week old), so we set it up on the porch by the back door. This was a small house and I had 2 dogs that barked at every sound they heard plus I always kept the outside light on for security reasons - the next morning the bbq was gone. I called the police who did come and fill out a report but they told me that they would likely never find it - and he told me that my neighbours bbq was also stolen by thieves cutting the chain that it was bolted to. So - dogs and a security light didn't stop these guys.
Another house, great section of town, same village - I was home alone for a week and working the evening shift at a hotel. Crawled into bed at midnight and woke up to a sound at my bedroom window. The dogs started growling, so I got up and looked around but couldn't see anything. Took a walk outside my place to see if there were any signs of someone trying to break in and I found some cigarette butts under my bedroom window. Called the police and spoke to them as I was a bit worried about coming home alone at midnight. They were pretty busy. I got home, went to bed with an axe beside me...fast forward a few hours and I hear a scraping at the window. I grab the axe, yank back the curtain and there's some perv trying to get the screen off - I race to the door, open it and sic the dogs on them. The guy takes off, the dogs take off after the guy and I wait by the door to see who makes it back. The dogs came home safe and sound. sammieswife.