I keep waiting for Batshit to do something stupid that I can tell you all about, but she's currently behaving almost like a normal dog.
I took the two of them on a long trek the other afternoon. I wasn't sure where I wanted to go, so we ended up walking to the starting point of a walk that I usually drive to. We've always previously done the loop widdershins, but this time we went clockwise. We said a brief hello to the man at the last house at the end of the track that runs off the dead-end lane - he was out by his gate - and launched into one of those big blocks of countryside with no roads. It's out in these blocks that you usually see the fun wildlife, but this time, however, nothing in particular presented itself. Not even so much as a squirrel in the wood.
We came out of the wood with our route home taking us past the junction with the footpath to where I've often left the car. Except, of course, that the footpaths were entirely notional, as the whole enormous field had been tilled. Nonetheless, as we got to the notional junction, Brains - who has only ever, that I can remember, walked this particular route in the other direction - veered off towards the car-parking spot.
She wasn't just running wide as she often does: she was heading purposefully to where the car should have been. I had to call her back to the route I was taking about three times. Once she realised that we weren't going to the (not there) car, she got with the programme and kept happily ahead.
I'd love to know how her mind works. Clearly that field, in all states from bare tillage to full growth, is connected in her head to the car being parked just over there. Ergo, one goes over there to find the car, even if one is (as Brains always is) up for continuing the walk for another however many miles.
It's always said that dogs generalise poorly from one environment to another (hence you have to teach them the same thing in several different places before they twig that they're meant to do it everywhere). But from observing Brains, it looks as if they understand a single environment very well indeed, and understand it from more than just the angle they're used to.
Having bored you all to tears, I need to go away and think about this some more...