Toqey is five months old and I'm sure he's hitting the terrible teens. His recall used to be amazing but, during the last two days, he's had selective deafness whenever he's wanted to play with other dogs in the park.
In one case, after lots of waving, he came back - took a treat for returning - and promptly sprinted off again for miles chasing a labrador. When I eventually got to him, the lab's owner bitched me out for not training my dog!

In general, he's started going a long way from me and generally being awkward.
It's not he's forgotten the commands. When I put him back on long lead, he did 'sits' and 'comes' like a robot obedience dog. I keep wondering if it is puberty-induced rebelliousness. His voice is breaking (see other thread) and he has started cushion humping (for up to an hour - I'm impressed by his stamina!)
I wondered whether anyone else had experienced 'I'm not deaf, I'm ignoring you' behaviour in a pup of this age?
[On the upside, he's started pushing the back door open when it's unlocked and he wants to go to the loo].