Two men have been arrested on suspicion of aggravated burglary after a woman was assaulted in her home by fake police officers who stole her puppy.
The men wore caps emblazoned with the word “police” and claimed to be on a drugs raid at the property in Putney in south-west London.
When she challenged them, a woman in her 30s was forced inside and the pair ransacked the house.
They also took Christmas presents and cash along with the dog, the Met said.
The arrested men, aged 53 and 34, remain in custody at a south London police station.
The stolen animal is a two-month-old American XL bulldog with blue merle colouring.
A spokesperson for the Met added that a genuine police officer should be able to produce a warrant card to prove their identity and if anybody is in any doubt they should call 101 or 999 in an emergency.