These are actual tax deductions, as quoted by people ‘in the know’ who share their advice about tax write-offs, as they relate to dogs. (Including dog foster parents, dog breeders, guard dog owners, Instagram influencers, and more!) Most of us cannot deduct our dogs or any expenses associated with them on our IRS tax returns. But that doesn’t stop people from trying! Lots of funny dog write-off stories here, too.