The alimentary allergies can affect any dog or cat, but they are not so common.
The animal usually resists the protein in the food, as milk or meat. The most typical reaction in dogs is an itch dispersing for the body, while the cats develop itches in the area of the face and head. With less frequency, the reaction is vomit or diarrhea.
In some cases, the animal develops a more serious allergic reaction to the food and edemas appear. The edemas usually appear in 20 to 60 minutes, around the eyes and of the nose.
If the animal is with a very strong reaction, you will usually notice breathing problems, could take to a breathing stop. It is treated of an emergency and the animal should be taken to the veterinarian immediately.
The allergic reaction to feed can be controlled easily once discovered and avoided the responsible ingredient by the allergy.
The process of elimination of foods indicates which of them exactly causes problems. That means to do with that the animal eats a diet that never ate before. After the skin of the animal is normal, increase to the diet the suspicious foods, one of every time to discover which provokes the allergy of them.
Vet Therapy – Dr. Cynara Campanati

