Worm Advice

Fox Lungworm

Crenosoma vulpis, also called the “fox lungworm” is different to Angiostrongylus vasorum (also known as lungworm). The lungworm Angiostrongylus vasorum has recently gained a great deal of media attention as if left untreated; it can be fatal to dogs. Angiostrongylus vasorum can also be carried by foxes. Visit our Angiostrongylus vasorum section for more information on this parasite.

What do they look like and where do they live?

  • Crenosoma vulpis, also called the “fox lungworm” affects dogs and foxes, and is found in many areas of the world, including the UK
  • Adult Crenosoma vulpis worms live in the airways of the lung of infected dogs and foxes
  • Adult females grow to around 10-14mms in length (male worms are shorter at around 6mms in length)

How can my pet contract Crenosoma vulpis?

  • Dogs become infected with C. vulpis by ingesting infected slugs or snails
  • As foxes can also become infected by this parasite, they can also spread the infection by shedding larvae into the environment

How will this parasite affect my pet?

  • Disease in dogs is usually related to the respiratory system, and symptoms can include coughing, difficulty breathing, discharge from the nose and retching
  • C. vulpis infections are rarely fatal in dogs

Can this parasite affect my health?

  • Crenosoma vulpis is not considered a disease risk to people