From the BBC comes a report about various false callouts that the RSPCA have attended over the last year.
My favourite was this one:
A woman rang to say the ‘beast of Bodmin’ had been asleep on her doorstep for 24 hours. It was actually a new telephone directory wrapped in black plastic.
This one was also quite amusing:
A member of the public reported a dead horse in a flooded field, which was actually a large plank of wood.