Word is the new exhibit at the Peggy Notebaert Nature Museum, Animal Grossology, isn't quite as gross as the human-centered "Grossology" exhibit from a few years ago. But visitors can still get hands-on with fake animal "barf" and "dookie," giant ticks sucking blood from a giant human arm, vials of animal smells like skunk scent, musk deer scent and fox urine, a 60-foot tapeworm, and a ton of interactive games designed to teach kids about biology. Exhibit runs through the end of the year.