So sorry. What an awesome gift, to have had 18 years with him! Surely that longevity deepens the hole he'll leave, but wow!, what a time y'all had together! I'm sure the two of you have many stories. Remembering those stories will help you with the loss, in time. There's nothing anyone can say to lessen your pain, but I expect you know that we get it. Hang in there. Scratch him behind the ear for us.

Godspeed, Mason.