The lungworm Angiostrongylus vasorum (also known as French Heartworm) is a parasite that infects dogs. The adult of this particular lungworm lives in the heart and major blood vessels supplying the lungs, where it can cause a host of problems. Left untreated, the infection can often be fatal.
The lungworm parasite is carried by slugs and snails. The problem arises when dogs purposefully or accidentally eat these common garden pests when rummaging through undergrowth, eating grass, drinking from puddles or outdoor water bowls, or pick them up from their toys.
Foxes can also become infected with the lungworm, and have been implicated in the spread of the parasite across the country.
There are two main problems caused by dogs becoming infected with lungworm: