The brown dog, Chester is nearly 5 years old. He has lived here for nearly half his life and in those 2½ years has spent quite a lot of time on one side of the door or the other. If he's in, he wants to be out - if he's out he wants to be in. You get the picture; he is no stranger to our glass doors.
I have just watched him spend a good 5 minutes investigating the wire-haired Pointer standing just inches from his nose on the other side of the glass. His reflection of course. Ears were cocked as he viewed it from all angles. A low throaty growl began to rumble. The other dog wasn't going away. In fact it began to look quite aggresive. He gave one tremendous bark. I let him out and of course there was no dog there.
As far as he was concerned he'd seen it off and there was much strutting round the garden. A sort of canine 'Victory Roll' methinks. What a hero.
Dumb dog. Bless 'im.