Hello! I would like to know if pets can also be claimed in taxes. thank you

[MinhT]

You can claim expenses related to your pet only if it is a guide dog or other service animal in Medical expenses.

On the subject, IRS Publication 502 - Medical Expenses says:

"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 disabled 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"

[Opus 17]

No. Pets and pet expenses are not deductible. 

Expenses for medically necessary service animals may be deductible medical expenses, subject to the 7.5% limitation.