A walker was left in shock after finding a beheaded cat near Yeading Brook.
The west London resident was near Ruislip Gardens where to her horror, she discovered the severed feline on the patch.
After reporting the incident to the RSPCA on Tuesday (February 28), the resident, who did not want to be named, returned to the spot to find the body had disappeared.
Stephanie Jost, whose mother found the cat, said she was "beside herself" when she returned from the walk.
She said: "The RSPCA acted swiftly and made their way to the pathway but the warden was unable to find the body, it seems that someone had taken the cat away.
"It has left my mother and I in shock and we are terribly sad in the knowing that someone will be missing their feline friend.
"We are also extremely concerned that this may of been a case of severe animal cruelty."
The mother and daughter are now asking for anyone with information to call the RSPCA on 0300 123 4999 31.
They described the feline as a large grey cat with white paws found in the Ruislip Gardens area.
Cats beheaded and shot in borough in intentional attacks
It is not the first time an incident such as this has been seen in Hillingdon borough.
A cat lover was horrified to find her pet had been beheaded and gutted outside her South Ruislip home on Halloween in 2013 in an appalling animal cruelty attack.
Inspector Phil Norman from the RSPCA has previously said there are "often rational explanations for unusual injuries" and said "small animals can be decapitated during traffic incidents or even death by wildlife".
In the same year, owners in Ruislip were devastated to find their cat had been shot in the chest by air rifle pellets.
In 2015, a similar incident saw owners in Campbell Close have their family pet cat shot in the face in a brutal attack.
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