6-month old golden retriever dog has always been a bit of a handful, but recently he's really turned a corner: no nipping, walking nicely, sleeping well etc.
Then - out of nowhere, he's started madly pulling on the lead (I've done hours of "loose lead" training) so hard I can barely control him. This morning he started leaping about when out for his walk and trying to grab the lead out of my hand. And then he lay down for ten whole minutes (it seemed like an hour) and refused to move. I just didn't know what to do. I had treats - he couldn't care less. I did super-friendly voice - cared even less. Angry voice - I could almost see him shrugging his shoulders.
He has also started Extreme Stealing. If I open the fridge door he is there right beside me ready to leap in the hope of grabbing something. He has eaten a tonne of unsuitable items this week. The vigilance is wearing me out!
Is this a temporary deterioration or do I need a new strategy?