Shortly after our arrival at Tortuguero, I was very excited to learn that someone had spotted an Eyelash Viper on the grounds. My son Sam is an avid amateur herpetologist, and I knew he in particular would appreciate any photos I could get. Jonathan was very careful to not let us get too close, as these snakes are quite poisonous, but we still managed to get in pretty tight. As a pure coincidence, if you look carefully (it doesn't show up as well at 'web' size), there is a mosquito right under its head.