We’ve had our grey 7 months now and for the last 3 months in the evening about (6-10pm) he will bark at both me and my wife. While barking he’s wagging his tail, the only way to stop him barking is to give him food of some kind. When we’re out the house, he doesn’t bark, when we go to sleep at approximately 10pm he won’t bark for the whole night, it’s just during this 4 hour window. We’ve tried upping his exercise he’s now getting 2hrs of walks a day. He has plenty of toys but we just can’t seem to get to the bottom of it. Any ideas?