A member of the public spotted the small wooden box which had been dumped near fields in Dodds Lane.
Winston vanished at the weekend near the River Thames in Richmond after being let off his lead. His owners say he simply ran off.
Honey, the cream and brown ferret, was found in a bag of teddy bears in a garage near Caterham in Surrey.
The oil has affected wildlife and boat owners have been told not to move their vessels to avoid spreading it.
Three puppies, believed to be a day old, died after being dumped on top of a bin outside shops in Basildon, Essex.
He was found by a passer-by in Hertfordshire.
Simon Pimblett, 53, was stunned when he spotted the white squirrel raiding bird feeders and snacking on the seeds.
The monarch, who technically owns all unmarked mute swans in open water in Britain, is being kept informed.
Firefighters had to winch the ten-year-old mare that had become stuck on its side.
A further seven snakes were found dead.