We're currently bringing our 9 year old white schnauzer cross to the vet for treatment for arthritis. It primarily affects his rear left leg at the moment, but we're told it may affect his other joints- we're working on reducing his weight, he's on medication that supposedly lubricates his joints, and some painkillers at the moment. He's improving slowly, and we're making progress this bout but this is a recurring issue that seems to be getting worse.
I've also re-arranged his sleeping arrangements so he's out of the draft from the air conditioner, and he has plenty of soft surfaces to lie on (though, he generally has his front end on pillows, and rear end on the floor). I generally don't need to worry about the cold except in wet weather since I live in the tropics, but I've been discouraging him gently from lying in colder places, and he avoids drafts anyway.
In addition to medical care, and weight control, what can I do to make my dog's life easier, especially when he's actively having issues with the leg?