This guy had just been left out in the rain. He didn’t actually try to bite me, but he wanted to make it clear to everyone nearby, including me, that he was not happy about this situation.
Two more pictures put below the break.
Poor guy. Just makes you want to pick him up and comfort him...
...until you got too near him, when he suddenly discovered a certain amount of hostility towards anything human.
...until you were a little ways away again, at which point he went back to staring at you. And started wagging his tail.