Ever wonder why dogs sniff each other’s rear ends, why cows need four stomachs to digest their food or why cats spit up hair balls? Here’s your chance to find out! “ANIMAL GROSSOLOGY,” a new special exhibit at the NC Museum of Natural Sciences in downtown Raleigh, takes a unique and scientific look at nature’s slime-making, vomit-munching and dookie-loving creatures. The exhibit opens October 2, 2010, and runs through April 24, 2011.

Cost: $8 for adults; $5 for students and seniors; $4 for children (5–11); free to Members