This male tarantula was crossing the main highway at dusk that runs through the Valley of Fire. We could see it about 75 yards away. We stopped to ensure that a visitor exiting the park would not end its quest for a mate or a bite to eat. These are profoundly more terrifying in a pet shop aquarium than in real life...

Something like this in my house? I'd have a shovel in one hand a heavy-duty wet dry vac in the other. In the wild, however, this creature makes perfect sense and is truly awesome.

Canon EOS 5D, Canon 100-400mm f/4.5/5.6L IS @ 400mm, 1/25 sec @f/5.6, handheld, image stabilized, ISO equiv 250