Thank you Dr. Kara for the very quick and detailed reply about Dandy.. We have applied a cold compress to the area where he was affected and as he ways 2.5 kilos am not 100% sure on the dosage of aspirin and also as we have had him for a year only (he is 5) I don't know his medical history of clotting or not, so for these reasons have not given him any aspirin. I have informed the vets which are closed for today and hope to get a reply. My wife has Dandy with the cold compress but he is wrapped up in a blanket to keep him warm, is this a bad idea as it might encourage any swelling? There appears to be no existing swelling anywhere, no vomiting, no diarrhea and no difficulty breathing. I am hopeful as he ate some food earlier if he was very ill he wouldn't eat? Sorry for emailing again we just love him to bits, as does the cat who is sleeping beside him and keeps looking at him. If no severe reactions occur can I assume this would not be a life threatening condition to a healthy small dog?