Diane Keaton's dog is set for life. In the wake of the beloved actress' death, we're hearing she set aside a bit of her reported $100 million estate for her Golden Retriever Reggie! QUITE A BIT! REVEALED: Diane Keaton's Cause Of Death According to Rob Shuter's Naughty But Nice Substack, an insider claimed that prior to The Godfather star's death, she arranged for a whole $5 million to be allotted to her beloved furry friend. View this post on Instagram A post shared by Hudson Grace (@hudsongracesf) The insider dished: "Reggie was her world.