French Heartworm or Lungworm, as it is commonly referred to in the United Kingdom, is caused by a parasitic nematode (roundworm or lungworm), Angiostrongylus vasorum. The roundworm infects dogs and other canine species, such as foxes and wolves, and causes canine angiostrongylosis. Dogs of all ages and breeds can become infected with French Heartworm / Lungworm. However, younger dogs seem to be more prone to picking up the parasite. Finding Angiostrongylus vasorum in a dog...