How do I know if my chihuahua has heartworm?

Im just wondering how do youknow if your dog has heartworm..like what symptoms should I look for??

well have to see your dog first but any questions contact me at Fun mail me or Fun mail me

Here's some info:

http://ww.ask-the-vet.com/dog-heartworm.htm

Good luck !!

I am a Veterinary Technician, I will give you the information on here, no links. I do Heartwork work on a daily basis. Heartwork is very dangerous. Take it to a Vet if you dog as Symptoms!

Heartworm symptoms in the dog can take years to show up. It usually starts of as a mild cough which most owners dismiss as unimportant but then gradually worsens to include symptoms like fatigue, more severe coughing and breathing difficulties. If left untreated, it will result in the eventual death of the animal. The more heartworms there are in the system the more severe the heartworm symptoms are. If the liver is involved, then other symptoms will include jaundice, loss of appetite and collapse.