Police have warned dog walkers near an exclusive golf club to be on their guard after suspected poisoned pizzas were found near the spot where two pets suffered agonising deaths.

A concerned member of the public found the pizzas and a whole crown of chicken in Edgecoombe Close, near the golf club today.

Kingston police are waiting for the results of toxicology tests.

In a statement a police spokesman said: "Food believed to contain poison was found in Edgcoombe Close today.

Kingston police's borough wildlife officer Hayley Parkes said: “We are just being careful at the moment. We have a good working relationship with the Coombe Hill Golf Course.

“We know they maintain the closest watch on their grounds, carrying out ad hoc night time patrols, and allow no harmful substances to be used.

“It appears poison may have been put out in the area by persons unknown to deter foxes and, unfortunately, family pets may have been the victims.

“All pet owners should remain alert and should not let their domestic pets eat any discarded food.”

The alarm was raised last month when six-year-old golden retriever Poppy died after eating pellets near the 15th hole of Coombe Hill Golf Club.

This week another couple revealed a healthy Jack Russell they rescued from a dog charity also suffered convulsions and foaming at the mouth after eating food nearby on October 13, 2011.

Three-and-a-half year old Max died as he was being rushed to vets 20mins after falling ill near the golf club during a late night walk with owner Nick Cowdrey.

He and wife Anna reported the death to the police last week after the Kingston Guardian reported Poppy’s demise.

Mrs Cowdrey said: “The dog just collapsed and started to foam and having fits. My husband picked him up and rang the front door and said ring a vet.”

Her vet said poison strong enough to kill a dog in such a short time would not be easily available to the general public.

A third dog, believed to be a labrador, also fell ill in the area in January, but survived.