You spent thirteen happy years together; still not long enough because we love our furkids so. You did your last act of kindness for Tigris and he is grateful to you. Hearing the night sounds and sleeping on your shoes before he made his trip to the Bridge were the most loving things that you could've done for him except to help him on his journey. RIP, dear boy. Take a nice long well deserved rest and then enjoy your new life until your reunion w/your humans. Peace to all.