
I remember when my Irish Setter was around 8-9 months old he had some strange facial swelling. His ear leathers were thick and his head looked quite mis-shapen. This was only evident in the mornings, and as the day wore on the swelling would go down, only to have returned by the next morning.
I worked out that it was an allergy to something straight away, but it took a little longer to decide to just what. It turned out that my daughters hamster was to blame. Both dog and hamster slept in the kitchen. When the hamster got relocated to my daughters bedroom, Bailey stopped swelling up.
Dawn R.