Fred Oswald has some interesting observations about two species near and dear to my heart...
A naturalist recently told about his study of armadillos in Texas. He described that, when threatened, armadillos rise up to "look big" and deter attack. This is an appropriate response to 4-legged predators, such as coyotes; but it can be tragically inappropriate when the "predator" has 4 wheels. The naturalist would often see road kill with the only apparent damage being a small crescent-shaped nick in the shell near the head where it had been hit by a car's undercarriage. If the animal had hunkered-down instead of rising up, it would likely have not been hurt.Read the rest of the article here.
Like armadillos, many cyclists respond inappropriately to the perceived danger of passing traffic on the road. The intuitive reaction is to "stay out of the way" by riding on sidewalks, or on the wrong side of the road (to see traffic coming), hug the curb or ride in the gutter.
In a way, cyclists' response is opposite to armadillos; they "ride small". What is similar is that instinct leads them wrong.