It's an offence for a dog owner not to clean up after their dog in public places such as roads, estates, footpaths and parks.
It's no defence to claim ignorance of the dog's actions.
Toxocara canis is a common parasite of dogs that can cause asthma, epilepsy and blindness.
Toddlers playing in parks are especially vulnerable as it is caught by swallowing soil contaminated with the Toxocara eggs which are spread through infected dog faeces.
Toxocara canis is preventable if responsible owners clean up after their dogs.
You can read more about dealing with stray dogs and the animal warden service here.