Photo by Frank Jordan, Tikal, Guatemala, May 2010.

This predatory snail feeds voraciously on other mollusks.  It move rather quickly, for a snail, and spends its time checking out a variety of habitats seeking a meal.  They in turn are fed upon by the mollusk eating snakes that are common where they occur.

Excellent source of discussion:  Dourson, Daniel C.  2009.  A Natural History of the Bladen Nature Reserve and its Gastropods.  Belize Foundation for Research and Environmental Education.