Is it me, or is it moist?

Wet, windy and dark today.

I was only going to pop some letters in the post box but Lottie managed to emotionally blackmail me (look up at me with those eyes) into taking her along and then dragged me up to the park for a paddle walk.

Me and MonkeyWithaView have blip challenged each other but I am unable to come up with the necessary today....
although if you are looking at this, Monkey....
Lottie was definitely on the trail of something suspicious in the park. Shame she doesn't look even a little bit like Scooby Doo. Are there any other sleuth dogs? I can't think...