Can I write off dog food and vet bills if I breed dogs?

Dog food and vet bills can be deductible if you are breeding dogs as a legitimate business and the expenses are ordinary and necessary for the operation of that business. This means you must be engaged in breeding dogs with the intent to make a profit, and the expenses must be directly related to the care and maintenance of the breeding dogs. Hobby breeders who do not operate as a business cannot deduct these expenses.