Poor boy. He might be in some pain as well as depressed. My 9 yr old has bad arthritis and has been on Dasuquin (has a bit of pain reliever in it) and carprofen (generic of rymadyl). My guy is a picky eater so I don't give him extra glucosamine like I give my 2 girls.
Since he likes going for rides do that. At 9 I don't stress about the exercise, my guy gets about a 1 hour walk everyday to keep him mobile, but I don't think he needs that much. He still likes to chase the ball a few times.
Lakota - WGSD 1/13/10
Wolfen - WGSD 12/31/14
Bull -WGSD 2-10-10
Apache - Shiloh Shepherd 12/15/02 - 6/9/15
Kiya - Shiloh Shepherd 5/15/04 -12/19/25