I've always wanted a camera just so I can see what's going outside,,, bears, deer, that kind of thing. It's distracting while cloistered away in the studio to think you just heard something. I have very few windows as that would have required dormers, So I have to go downstairs to investigate. A camera is on my wish list, but I want to mount it on the peak of the roof.
Dogs do keep people away. It's sad that city people would have large dogs locked up in a house just for this purpose.
. Anyhow consider this over picking up dog crap and $50 a month for food and vet bills. .
http://www.x10.com/products/pk9000_deal.htm This retailer seems to have a lot of cameras too. Prices seem good.