It looks like Carrie Fisher's therapy dog, Gary, is in great hands. On Tuesday, Billie Lourd, who took custody of the French Bulldog after her mother passed away in December, posted a sweet video of herself with the pooch in honour of his birthday. "🎉🐶🎉 Happy 5th / 35th birthday to my #brotherfromanothermother #sunsouttonguesout," she captioned the clip of her with the Snapchat dog filter. Since the tragic deaths of her mother and grandmother Debbie Reynolds, the Scream Queens actress has been extra sentimental on social media. In addition to writing a heartfelt tribute to her mum, she also recently shared a sweet throwback photo with Carrie.