Burngate wrote:Surely that depends on the breed? I doubt a Panthera tigris would notice it, though the initial installation might be risky.
Somehow I doubt he has that particular cat... a bit heavy on the carpet...
To make a suggestion, for battery life estimates simply build a fixed prototype first, then get a cheap ammeter (1 amp range or so) and put it in series and actually measure what you get. Matt's suggestion above looks a good one but you'll never know until you try it with the gear you have.
A few people have posted about their own wildlife cameras/trail cameras so it should be possible to get a reasonable run time out of a portable box.