People tend to think that we know a lot. And although we do, it must be admitted that we don't know as much as we think we know. Ans so it is in the case of the most primitive dog known on the planet. Thought to be long extinct, it's been documented in the mountains of New Guinea. Who knew?
Speaking of canids, it was widely believed that wolves, once reintroduced to Yellowstone, would pretty much stay there. Now they're spreading westward across Oregon, and it looks as though they'll move into the Cascades - and possibly the Coast Range. "They'll never move through the Willamette Valley," we were told. Too many people here. Yeah, right.
3000 feet below the surface if the Pacific Ocean, off the coast of California, a mountain 2.5 miles in diameter appears to be crawling across the ocean floor, leaving tracks in its wake and leading to some speculation that it might be artificial.
Others proffer different explanations, but again, nobody really knows. There's a lot more going on around this planet that we thought.