His pasture mate, Hunter, last saw him as we walked him out of the pasture to the area where we were going to bury him to have him put down. We have known this was coming since this spring, so on August 26th, we got him a pasture mate - Gunner, the miniature Sicilian ass. I hoped and prayed that this would help keep him happy and content when Scooter was gone. It seems to have helped, but Hunter is still so sad and looking for Scooter. He ran around and called for Scooter until the middle of the night Wednesday night/Thursday early morning. Since then, every time I go out to see him or feed him, he's standing at the fence looking over to where he last saw Scooter walk out of the gate. My dad saw Gunner and Hunter playing on Thursday morning, but he just looks so sad to me. He still eats fine, but his eyes look sad and for the first time in ages, he called to me when I left the pasture today. He just isn't himself.
How long can I expect this to go on? When should I begin to be real worried?