"You can include in medical expenses the costs of buying, training and maintaining a guide dog or other service animal to assist a visually impaired or hearing-impaired person, or a person with other physical disabilities. In general, this includes any costs, such as food, grooming and veterinary care, incurred in maintaining the health and vitality of the service animal so that it may perform its duties."Expenses incurred by a person who raises guide dogs for a charitable organization, such as Guide Dogs for the Blind, can claim an itemized deduction. If you foster or rescue animals for an IRS-approved charity, your expenses for food, litter and veterinary bills may be deductible. In June 2011 the Tax Court upheld a charitable deduction for unreimbursed out-of-pocket expenses incurred by a woman while taking care of cats in her home for the organization Fix Our Ferals. And if you elect to deduct state and local sales tax instead of state and local income tax on Schedule A, you may be able to deduct the sales tax paid on pet food.