I've often thought about what my pet cats do while I'm not home. I suspect they sleep the whole day, but I can't be certain. When I'm in your own home, they chase each other like crazy, they follow me throughout the house, plus they jump back and forth from the couch to my desk.<br/><br/>For this reason, I thought to put in hidden cameras with DVRs in all rooms. This is how I can monitor these pet cats to view what they do if they are alone in the home. I might be able to take great footage for videos that may go viral on YouTube. I just wonder simply how much these DVR cameras cost and just how quick it is to set up them.