DOG owners are being warned to be vigilant after a pet was poisoned in Guiseley in what is believed to have been a deliberate attempt to cause harm.

The warning has been issued by White Cross Vets who treated Monty, a one year old miniature schnauzer after he ate cereal laced with rat poison as he was being exercised close to Nethermoor Park and Guiseley Cricket Club.

The vet says the poisoning appears to have been deliberate and mirrors a number of similar incidents in October 2014.

Monty's owner noticed the dog was eating cereal off the floor, and when the food was tested by the vet it was found to be laced with rat poison, which can be fatal to dogs.

Rod Beardshall from the Guiseley-based vets said: "Thankfully we have been able to successfully treat Monty and he doesn’t appear to have suffered any lasting damage but others might not be so lucky. Dogs are naturally inquisitive and will nearly always pick food up so owners need to keep a particularly close eye on them at the moment to make sure they don’t eat rogue substances which could have devastating consequences.

In 2014, dozens of marshmallows laced with poison and filled with nails and ball bearings were found on a field near Guiseley Cricket, close to a children's play area, and on Otley Chevin.