Iceberg
A bullfrog sits in the water like an iceberg, with the largest part of its body hidden below the surface. Or perhaps I should say kind of like an iceberg, since with a bullfrog the most dangerous part is the part that's above the surface, the ravenous mouth that will devour all manner of pond residents. There is a boardwalk at Ankeny National Wildlife Refuge that goes out over a large pond. The boardwalk is closed when the waterfowl arrive to winter over at the refuge, but the warmer months can provide glimpses of bullfrogs and rough-skinned newts in the water below.
Fearless
I came across this large bullfrog while hiking at Smith and Bybee Lakes in Portland, Oregon. It was near sunset and I thought the frog would move before I got a picture. However, not only did he pose for the picture, he let me move a plant stem out of the way that was right above his head. I've never seen a frog so complacent, perhaps he felt that at his size he didn't have any natural predators. Perhaps he shouldn't feel too safe though ...