Don’t know if this is unusual and it’s a bit of a triviality but I’ve just found a slug in the loft of my “lean to” roof. It’s climbing up a side party wall within the loft were there is no obvious route to the outside. There has been a small amount of roof leakage down this wall, small trickles in heavy rain so it’s had a good supply of water to drink but what on earth could it find to eat in a loft space? I noticed this slug about a week ago and its still there, still alive and presumably quite happy and healthy.