It's extraordinary to witness how much these two adore each other. They usually get together at about 6.00am each morning, when I take them both for a walk, and it's like watching long-lost brothers meeting up after decades apart.
Bok or Bock (I've not asked how it's spelled) is Monty's 'bestest bestest' friend in the whole world. He lives about 500 metres away, and they've known each other since they first quit their respective mothers' sides.
They can spend hours together play-fighting, chewing each others ears, rough-n-tumbling, or just (what looks like) snogging.... After which they then sleep for hours in each others arms.
The one breed of dog that I've had more dealings with than any other, has been the Border Collie. A dog for whom the word 'faithful' was coined. I'm sure that Bok is only about 50% BC, but he has all the attributes of a perfect companion; certainly our Monty thinks so.