Some years ago I remember seeing an elderly man walking his dog in the park.
Every time I saw him I would think "There's the giant border collie." He
was a big old black and white collie, maybe only slightly younger than the
man. I didn't see them for a while, and then one day I saw a woman, presumably
his daughter, walking the old dog. That was the last I saw of the dog.
Thinking about it, it was a black and white collie.