I hate it when a squirrel sits on my camera to groom and swishes his tail enough to trigger the camera several times, just out of view. Sometimes I see a fuzzy shadow at the edge of the video. Once I had a view of an eyeball.
I hate it when my camera takes ~500 10 second videos in the span of 2 days. I think it is caused by dying batteries. I have a pack of Duracell quantums and they are now relegated to flashlight use. My Stealth Cam G45NG doesn't play well with them.
