We all have the same problem..how do we keep our pets entertained while we go to work. Toys and bones you can fill with is one easy idea. I've recently been putting his food, and mix with dog treats in a crumbled paper towel roll. He is smart enough not to bite and swallow the roll though.
I've also stuffed Kong toys, with peanut butter, hot dog chunks, semi-soft dog treats, canned dog food, etc. He chews and works at it to get the treat out. If you hide these toys, the dog gets to enjoy the hunt and seek for a reward.
However chewing does not alleviate all boredom, so I give him toys to busy him.
