Throw an empty plastic bottle on the floor andsit back as he:
Chases it round the room growling at it:

Feeling sorry for your other dog who is feeling left out, you rescue the bottle and give it to him:
Who pushes it a little, gives it a little squeeze

And then collapses in a heap from exhaustion

Well it had been a very busy two minutes for him and it had been at least that long since his last sleep lol




My partners old dog use to love doing the same