Ok as I have never owned a dog before I am still learning. A freind asked me about heartworm and as I have no idea I said I would ask here.
She wants to know
1. how do dogs get it
2. What sypmtoms does it present with
3. what is the treatment
4. can they still get it if on heartworm medication
5. can any dog get it
many thanks to you wise dog owners in advance