It might appear that this buck is talking back to me but he is actually doing what is called the ‘flehmen response.’ A lot of mammals actually do this when they smell something interesting – think of it as them taking a deep whiff of something. I guess perhaps I was particularly stinky that day? 😉
![A deer buck displays the flehmen response at the Rocky Mountain Arsenal National Wildlife Refuge. (© Tony’s Takes)](http://lh5.googleusercontent.com/-1lvCjxO1YXg/VIBjdVhN7iI/AAAAAAAAFvQ/3yQHGv7NMhs/s710/15730882650_f45d4d144d_o.jpg)