The 39-year-old "Star Trek" actor paid a heartbreaking tribute to Noah, in which he told how the pooch made him a better person and thanked his canine companion for always being by his side.
He wrote on Instagram alongside a picture of himself and Noah: "Anyone who has ever truly known me in the last 14 years has known this true prince. Noah has been by my side through up and down. Thick and thin. Feast and famine. In loving him I learned to love myself more fully. He taught me compassion and patience and generosity... And oh how he made me laugh.