They get bored/depressed if you are not giving them attention and no one else is around.
Our two golden don't seem to need as much as humans (7-8 hours). They do fine on 5-6 hours. Wake us up every morning at 6AM while wrestling. Soon as we open bedroom door they tell us they want to play (immediately grab wrists and pull us out to the living room and down towards the floor).
Our last golden was a larger dog and he slept all day because he had no other dogs to interact with.
What else is a dog supposed to do for the time you aren't playing with it? Rather it chew your furniture? That could be arranged...
