I live right amongst them here on Lake George in north central Florida. that one looks to be about ten foot, although he is a little broad in the back for that size.
I've had them put me back in my airboat several times when wade fishing for bass in the spring. They can get to be a downright nusience sometimes! Also came on a bunch of hatchlings along the shoreline during archery season a couple of years ago. Decided real quick I wanted to hunt somewhere else!! Had five up to six feet in my back yard when the water was high last fall. Had to go out several times a day to chase them off. Hell on dogs!
Still, I'm more comfortable with gators than with your bears and lions in the Northwest.
Any of you uplanders want to wade fish for bass, come on down!! I'll try to get over my concerns with your critters.