Hopefully, you aren't cavorting too much at Casa Cheeky. But if you need a little quiet 'puter time, maybe try these on for size. Yeah, nothing fancy, but you can share a couple of them with your four-legged friends. Maybe they enjoy surfing?
http://www.youtube.com/watch?v=FdbxLk8_C8c&feature=related http://www.youtube.com/watch?v=5JsDt-teM0Q&feature=related http://www.petrats.org.uk/ http://www.cryptograms.org/ (And if they're good at the brainteasers, they need their own website!)