Allergy and Food Intolerance in Dogs and Cats

Does your dog or cat vomit frequently, or have diarrhea, or show skin irritation, poor coat condition and/or hair loss? Any or all of these symptoms could point your veterinarian to allergies, and specifically an allergic response to the food you feed. Ingredients in food that your pet cannot tolerate may result in a variety of negative reactions. Allergy and food intolerance is also called an adverse reaction to food and can create ongoing problems with both the skin and the digestive tract. 

  • In dogs, the most common causes of adverse reactions are beef, dairy products, wheat, and chicken.
  • In cats, the most common causes of adverse reactions are beef, dairy products, wheat and chicken.

Age Old Problem 

Free radicals are a normal by-product of energy produced by the body. Natural defense mechanisms render most free radicals harmless, but a small percentage remains active to cause cell damage. Over time, the body produces more and more free radicals. The end result is aging. Below is a list of common behavioral changes in older dogs. Check the signs that affect your pet and discuss them with your veterinarian.

  • House-soiling “accidents”
  • Does not “ask” to go outside
  • No longer greets family members
  • Does not seek attention/petting
  • Does not recognize familiar people or places
  • Does not respond to verbal cues
  • Sleeps more during the day or less at night
  • Appears lost or confused in the house or yard
  • Wanders or paces
  • Stares into space or at walls

Behavior and Anxiety related Disorders 

Generalized anxiety, boarding, and house soiling problems

Urinary Disorders

Chronic crystal or stone formation and cystitis

Metabolic and Endocrine Diseases

Diabetes, pancreatic disease, liver or kidney disease


These are just a few examples of health issues that may be controlled by an improved diet for your pet.