Some dogs develop an allergy to some food items. Milk products, eggs, poultry, meat products, pork, fish, and other seafood are most often implicated in these reactions.
The effects of allergy to certain foods may be almost immediately apparent:
breathing difficulties
skin rashes
excessive secretion of tears and saliva
In a few dogs the reaction may prove fatal, but these cases usually have has a previous history of acute illness after eating certain foods.
Most cases of food allergy dermatitis and spontaneously; others may need the use of antihistamines, cortisone like drugs, or adrenaline to abolish the sign and symptoms of the acute reaction.