I’ve lived with a dog that showed curiosity and confusion about its own reflection, and another that ignored it. It might be that the first was a muttly retriever and needed better eyesight than the other, which was a muttly sheep dog. Sheep are big and obvious, compared to floating duck carcasses.
The other thing I want to note is that I have discovered that a massive cottontail is burrowed right up against the outside of my computer room. I had seen the burrow yesterday, in a corner of the concrete crawlspace wall, and wondered whether it was really a burrow or what else the hole could be. I went to investigate the hole some more today, while going to get the mail from the mailbox, and then as I had walked away to get the mail, and then moved forwards a bit to look back at the hole from around some shrubs, I saw the rabbit run away. I didn’t see it come out of the hole, but I’m making the inference that the rabbit and the hole have something to do with each other. :)
Postscript: Cottontails supposedly like to nest in shallow depressions, similarly to hares, and I know we’d had that in our yard in New Jersey, but Wikipedia’s article on Eastern Cottontails describes them as digging burrows. Otherwise I’m inclined to be confused. Maybe there is a dragon in that hole, rather than a rabbit....
These cottontails are active largely in the twilight hours and at night, when they venture to open pastures, meadows, or lawns to forage. They frequently live in the edges of towns and feed in gardens and flower beds. In the daytime they rest in beds in nearby thickets or in underground burrows and small culverts.