The Agent Carter star shared the sad news on Instagram with a photo mosaic of himself and Joe over the years. Chad captioned the pics with a heartwarming message eulogizing his late pet, who was 15 when he died.
"My best bud & 1st born son Joe, Thank you for everything you've ever done for me. You've been my kindred spirit, my unconditional friend." Chad wrote. "Thank you for carrying the weight that I could not."
"Almost 15 years of adventures Joe and I'm so grateful for every minute," Chad shared in the emotional message. "Rest easy now bud. Check in on us once and while would ya... You're missed and always will be. Thx for waiting to meet my son. This family won't be the same without you but so much stronger because of you. Rest in peace Joey. We Love You."