The M25 cat killer is believed to have slaughtered around 400 cats and small animals, leaving their bodies in plain sight in order to "horrify" people.
Police are hunting the killer who has been described as a "psychopath", and kills the animals with a blunt force, before mutilating them with a sharp implement.
Attacker - Croydon - Cat - Killer - Killings
The attacker was first dubbed the Croydon cat killer, because it is believed the killings started in the south London area in around October 2015.
However, in the last three years animals in Surrey, Manchester, Sheffield and Birmingham are thought to have been killed by the culprit.
South - Norwood - Animal - Rescue - Liberty
South Norwood Animal Rescue and Liberty (Snarl) has been cataloguing the deaths, and helping police with the investigation.
Snarl co-founder Tony Jenkins said: "We are seeing the exact same injuries, and he leaves a signature.
Killer - Enterprise - Killer
"If there is more than one killer, it is likely to be a joint enterprise rather than a copycat killer.
"We suspect he gets off on hanging about and watching people's reactions. We can't prove that, but we strongly suspect it is the case because of the way he is displaying the bodies.
Act - Humans - Basis - Bedroom - Someone
"It is definitely an act against humans on that basis - he leaves them underneath bedroom windows whilst he hangs around to see someone find their beloved cat decapitated."
Asked what he thought the...
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