With the cats, we have adopted a "no intervention" policy other than in very few cases. One example is the time when the cats were in the workshop and after noticing a young family of fledging blue tits we kept them there until the young birds had left the garden.
Another example was the other day when a beautiful green lizard was seen in the garden for the first time, unfortunately Gawber discovered it and would have had it if I have not picked it up and put safely away from his eager claws.
I was unable to take a photograph but the following day while on a short walk, I had the opportunity to take these photographs It seems the lizards were warming themselves with the residual heat from the stones when the weather suddenly changed and become overcast and cooler with the north wind. Since we have noticed the lizard is now resident in and around the pond area and bog garden.