The Honoring our K9 Heroes Act establishes a federal grant program to help pay for medical care expenses for retired federal working dogs, such as those previously used by law enforcement and military agencies. Eligible organizations must be nonprofit groups with at least two years of experience providing veterinary assistance to retired federal working dogs, and they can apply for grants to cover a portion of medical costs for dogs that have been officially retired and are in the care of their former handlers. The program is administered through the Department of Homeland Security and authorizes $1 million annually for fiscal years 2025 through 2029 to support these grants. This legislation recognizes the service of federal working dogs and aims to ensure these animals receive adequate medical care after their retirement from government service.