Ive googled and I can honestly say he's not stressed, gets plenty of attention and play. Diet wise I'd say he does well has a mix of Encore high chicken content pouches and Royal Canin biscuits. Has tuna sometimes. He doesnt have treats.
The other thing I read was could be mites, fleas. He did have a flea outbreak a couple of months ago. But I treated.
Seems happy and healthy and eating well.
Any ideas?