They have to be sensitized; they have to have been exposed for some period of time. So, in general, they're not going to react really dramatically the first time they eat it but a dog that has eaten a food for years could suddenly become allergic to that food. 27 апр. 2012 г.
Can a dog develop an allergy to its food?
Just like people, cats and dogs can have food allergies, too. And like humans, those allergic responses can range from itchy and irritating to severe and dangerous. Food allergies in pets can begin at any age. They can start even if your cat or dog has been eating the same food for months or years.
How do you know if your dog is allergic to their food?
In the dog, the signs of food allergy are usually itchy skin or digestive disturbances such as vomiting or diarrhea. Other more subtle changes can also occur, including hyperactivity, weight loss, lack of energy and even aggression.
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