Arnold Schwarzenegger is celebrating his 76th birthday. The actor and icon shared a sweet video alongside his various dogs, donkey and miniature horse, sharing a sweet message for the fans that congratulated him on July 30th. Joseph Baena reveals how his father Arnold Schwarzenegger has impacted his fitnessArnold Schwarzenegger shares some fitness advice for 4th of JulyA post shared by Arnold Schwarzenegger (@schwarzenegger)The clip shows him feeding his miniature horse and his donkey Lulu, as his two dogs enter the frame in excitement.