Dogs and cats may show signs of abdominal pain or distension, diarrhoea, vomiting and flatulence. Dogs and cats can be intolerant of carbohydrates, lactose, food colouring and some preservatives.
Your veterinarian will then do some testing to try to determine if your pet is suffering from dietary intolerance. He will do a complete history, perform a thorough physical examination, blood tests, faecal flotation and urinalysis and may perform special tests if required. Blood tests and urine are usually normal. For example, with dietary hypersensitivity, the response to changes in the diet occurs within one to two weeks. If there is no response, dietary intolerance is suspected. There are other disease problems that may show similar clinical signs.
To treat dietary intolerance, try to avoid your dog’s or cat’s exposure to food toxins, excessive carbohydrates, specific foods e.g. some types of fish, diary products and try to limit consumption of rotten foods, overeating and pica.
As the owner, you should note that many human foods or treats could cause a problem in your dog or cat. You would need to limit or avoid giving your pet these foods. Once the offending food is identified then your dog or cat returns to being the pet you know and love.