I'm not 100 percent sure what that looks like, but I think of it every time i ride the pedestrian/bike bridge and the camping area immediately south of the river.
And I thought of it this morning when I shared the trail with a real, live predator.
This wasn't the actual guy, but you get the idea. He wasn't quite as bold as the pair I encountered in October (read about that bizarre event here) but he wasn't as shy as I expected either. He loped across the trail a dozen yards in front of me and then stopped to watch me go by. I clanged away on the brass Crane bell, and it did seem to produce a flinch, so who knows.
Yes, I'm fully aware that coyote attacks are exceedingly rare, (although not unknown) but I rode faster from that point on... like a predator.