We had an almost black frog in the garden. I rescued a number of toads from the middle of a very busy main road a relocated them to my garden so I am very much hoping some of them are still there and ready for slug eating duties.
I am a bit concerned that since I moved them they will not know how to get back to their birth lake. However since it is relatively new being a reclaimed gravel working, it would be interesting to know how they started using it in the first place. Anyway whichever way they go from my garden sooner or later they will hit water.