American Animal Hospital Association (AAHA)
925-230-9422

How to Switch Pet Foods

When feeding you pet a new food, it is best to introduce it slowly. If you feed too much of the new food too quickly, your pet could experience food refusal and possibly some degree of stomach upset, diarrhea, vomiting, excess gas, or constipation. The best method for transitioning form an old, familiar food to a new food is to gradually mix an increasing amount of the new product with the old over a period of time until the animal is receiving only the new product. We recommend at least a 7 day transition before you begin feeding the new food exclusively. This allows your pet’s digestive system to smoothly adapt to the new food. On the 7th day, you
can feed the new food exclusively.

DAY 1 DAY 2 DAY 3 DAY 4 DAY 5 DAY 6 DAY 7
OLD DIET 75% 75% 50% 50% 25% 25% 0%
NEW DIET 25% 25% 50% 50% 75% 75% 100%

If at any time during the transition your pet develops any digestive upsets, slow the rate at which you are switching to the new diet. In the very rare event that your pet develops more serious signs of distress, withhold all food and call us at 925-443-6000. Many times this problem will be solved by withholding all food for 12 hours, then making a slower transition starting with the pets old food again. Because vomiting could be caused by another factor, you should always call and consult with us. If your pet refuses to eat, do not go for more than 24 hours without consulting one of the Doctors here.



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