Lungworm is an increasingly common parasite in dogs, and it can have a lethal impact. Dogs pick this up easily, by swallowing slugs, snails or frogs. Every year, dozens of dogs in Ireland die from lungworm every year. To find out more, and to check what you need to do to protect your pet, listen here.
Please note that I am unable to answer veterinary questions in comments. If you have questions or concerns about your pet's health it is always better to contact your vet.