Dog owners are warning that popular walking spots in their area are being littered with poisoned sweets.

Kayleigh Harrison discovered the marshmallows on Saturday when she was walking her dog just outside Leeds at Guiseley Cricket Club and close to a children's play area.

Dog owners are warning that popular walking spots in their area are being littered with poisoned sweets Credit: Kayleigh Harrison

The club say they have searched the grounds after the discovery.

Kayleigh told Calendar she found a dozen of the marshmallows and that she "just knew they weren't right" when she saw the bright blue centres.

She said some were filled with what is believed to be rat poison, others with ball bearings and nails.

Dog owners are warning that popular walking spots in their area are being littered with poisoned sweets Credit: Kayleigh Harrison

Kayleigh posted a warning on her local dog owners Facebook page "Take My Paw", and the discovery has since been reported to the RSPCA and West Yorkshire Police.

The group, which supports the work of animal charities across West Yorkshire, also report the discovery of similar marshmallows around the Chevin in Otley, north of Leeds.

Take My Paw member Zoe Webb told Calendar the group are just glad to get the word out about the danger the sweets pose and more than 75,000 people have now shared Kayleigh's original warning.

Tina Gelder reports.