Photo gallery: Boo at the Zoo

Charlie Danielson, dressed as a cat herder, and his daughter, Isabelle, 3, dressed as a cat, take a moment to rest after trick or treating during Boo at the Zoo at Lake Superior Zoo Saturday. Charlie and Isabelle's mom, Kristin, dangled a cat toy in front of Isabelle to easily navigate her through crowds at the event. (Tyler Schank / tschank@duluthnews.com)

Landon (the whoopee cushion) Brown, 7, of Solon Springs celebrates a win against his grandpa Scott Brown of Duluth during a game of bags at Boo at the Zoo at Lake Superior Zoo Saturday. (Tyler Schank / tschank@duluthnews.com)

Josephine Kunnari, 2, of Two Harbors reacts to seeing Cameron LeWren in his Baymax costume during Boo at the Zoo Saturday. (Tyler Schank / tschank@duluthnews.com)

Two jellyfish, a mermaid and a blue crab walk along a path at Lake Superior Zoo Saturday during Boo at the Zoo. (Tyler Schank / tschank@duluthnews.com)

Khiley Fudally, 5, of Superior reacts as a red-crested turaco leaps between branches at Lake Superior Zoo Saturday. (Tyler Schank / tschank@duluthnews.com)

Torsten Lindquist, 3, of Barnum gets a look at the lions at Lake Superior Zoo Saturday during Boo at the Zoo. (Tyler Schank / tschank@duluthnews.com)

Justin Rosencrans holds his 2-year-old daughter Lillian up to wave at a green iguana during Boo at the Zoo Saturday. (Tyler Schank / tschank@duluthnews.com)

Vampire teeth lay on the ground outside of Lake Superior Zoo Saturday. (Tyler Schank / tschank@duluthnews.com)

Kae'Lynn Stokes, 5, poses with the Ghost Busters as her grandmother, Tammy Langfeld, takes a photo during Boo at the Zoo at Lake Superior Zoo Saturday. (Tyler Schank / tschank@duluthnews.com)

A family walks toward an exhibit at Lake Superior Zoo Saturday during Boo at the Zoo. (Tyler Schank / tschank@duluthnews.com)