We’re guessing this isn’t the first time JD has celebrated someone’s birthday.

That’s because when it was time for everyone to serenade the horse with "Happy Birthday" while holding a cake in front of him, he knew exactly what to do — and his friends found his humanlike reaction hilarious.

We’re sure you will, too. Watch him in the video below.
https://www.youtube.com/watch?v=fhTibt3nlJYMore on Vetstreet: