I noticed the cat poking at something on the lawn and went to have a look — at first I thought it was a little beetle, but on closer examination it turned out to be a very tiny-weeny frog.
And once I’d seen one, I realised they were all over the place: perhaps like flying ants, there’s a specific combination of temperature, humidity and so on that triggers them to all come out of the pond and disperse.
I’ve posted more photos of tiny frogs to Flickr here. Oh, and if you’re wondering about the nail varnish: that’s not my hand.