Some have been talking about the rains Dallas had last night. The thing is, though, Sherin would not have been "washed down" in a storm from the back of her house to the culvert area where she was found. If you look at the map, and go to street view at the Centennial and Bowser intersection, you'll see that it is all pretty flat, as is the area around the railroad tracks just due west of that intersection. There are a few sewers on Centennial or Bowser, but there is no under-the-road culvert or wash area near the tracks that she would have traveled down during a storm in order to arrive at that little culvert where she was found this morning. In other words, she was not found in a 'swale' culvert (like the bigger ones pictured earlier in this thread). That culvert is just in a low spot at that particular street, but rising to level as you head back southward towards Centennial--which is a totally flat intersection and road all the way to the railroad tracks. I'll try to post some photos to give you a sense of the terrain.
So, IMO, I don't believe the rains swept her away. Nor am I convinced a phantom coyote dragged her off (with no screaming, no blood traces, no scent tracked by dogs, etc.), carrying her northward along the tracks, crossing a 4-lane highway, and traveling all that distance before finding just that one tiny culvert to deposit her in. We've had coyotes attack small dogs twice in our N.Texas neighborhood; while rare, there is definitely a commotion, a trail, and some mauling along the way. I'm also not convinced a 3-yr old would voluntarily take that same route in the middle of the night and elect to cross a well-lit 4-lane highway so that she could then go back down into the darkness to hide in a tiny culvert. And die of...what? Hypothermia?
Here are some photos:
1. Where found (SW side of intersection), culvert circled:
2. Satellite view of area from home to intersection/culvert where found:
3. Centennial @ Bowser intersection (facing NW); sewers; alley backing up to easement and tracks behind neighborhood watch sign:
4. Centennial at Bowser (facing west/southwest); high wall on neighborhood side of Centennial; tracks in opening beyond, no culvert underneath Centennial (sewers only):
5. RR crossing at Centennial where Sherin and/or coyote presumably crossed (4-lanes) while traveling northward: