Dog walkers have warned pet owners after a blade was discovered hidden inside a tennis ball at a popular country park.
Greater Manchester Police are investigating after a stanley knife blade was found inside the tennis ball which had been picked up by a puppy in Lyme Park, in Stockport, on Friday.
According to the Stockport Crime Watch Facebook page the balls were found hidden among reeds and as the dogs chewed it the blade appeared.
The unnamed owner said they "can't bear to think of the consequences" had the dogs chewed or swallowed the blade itself during incident which they have reported to police and park rangers.
The post said: "This ball containing a new razor blade inside was picked up by my dogs in the reeds adjacent to the Knott car park at the far end of Lyme Park at 6.00 pm 24th May.
"It has been doctored by someone who evidently has malevolent intentions towards dogs.
"My puppies carried it back to the car and chewed it up. We found this vicious razor blade inside.
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"The pond life responsible may use poison or there may be more doctored balls in the vicinity.
"The police and the rangers at Lyme have been informed and have assigned an incident number IML410822.
A spokeswoman for the National Trust, which owns Lyme Park said: “We are aware of an incident reported by a local dog walker on Friday 24 May. The matter is now being investigated by local police.
"We've informed our countryside team who will be carrying out additional checks whilst working in the wider estate.”