PET owners are asked to be vigilant after a spate of cat poisonings.

Two cats in Newbridge were poisoned this week, while Maxine Davies, 48, of Monnow Way, Bettws, had two cats put down on Saturday after anti-freeze poisoning.

Black and white Fritz and tabby Angel returned home poorly this weekend.

Mrs Davies said: “The pain is horrific. They act as though they’re drunk and then it shuts down each individual organ.”

Sweet-tasting anti-freeze is appealing to cats.

Joanna Norman’s cat Neville suffered breathing problems and kidney failure on Tuesday after going missing on Monday.

She took him to the vet who said he had calcium oxalate monohydrate crystals in his blood, consistent with antifreeze poisoning. He was put in an oxygen tent and seems to be recovering.

Nicola Walker, 44, who lives on the same street said her cat Chandler has the same symptoms. She recognised them after having another cat Pedro, put down after anti-freeze poisoning two years ago.

An RSPCA spokeswoman said: “There may be an innocent explanation but we are concerned that these poisonings could be a deliberate attempt to cause suffering to cats and other animals by leaving out anti-freeze.

“We would also ask perpetrators to be aware that deliberate poisoning using anti-freeze could mean a £20,000 fine and or six months in prison.”

The poisonings follow the news that a young cat was found disorientated last Thursday in Pontllanfraith, near Blackwood, after being shot twice in the head.