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Why is it bad if my puppy eats cat food and my cat eats dog food?

Updated On September 23rd, 2025

Pet's info: Dog | Siberian Husky | Male | unneutered | 1 month and 24 days old

I have a cat and a puppy. Why is it bad for a puppy to eat dry cat food and a cat to eat puppy food?

1 Answer

Most Helpful Answer

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Answered By Jennifer Summerfield, DVM CPDT-KA

Veterinarian, Certified Dog Trainer

Published on December 11th, 2019

Because the nutritional requirements for cats and dogs are different! :) While it won't hurt anything for your cat to occasionally eat a few bites of dog food (and vice versa), both pets need to be on a species-appropriate diet. So your dog's diet should be mainly dog food, and your cat's diet should be mainly cat food.

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