Zoo BOO! at the Maryland Zoo in Baltimore 2025 will be over three weekends in October beginning October 3 and running through Friday, October 31, with the only weekend not included being OktoBEARfest, which is scheduled for 10/11-12.

In the past, Zoo Boo was just the last weekend in October.

This year, there are a whole host of activities, including a hay maze, hay rides, a moon bounce, craft, costume contests, trick-or-treating throughout the Zoo, games, food vendors and more.

Also this year, each weekend will feature a different costume theme:
October 3-5: Magic
October 17-19: Super Heroes
October 24-26: Monsters

Here are more details on the Maryland Zoo in Baltimore’s website ZOO BOO! page.

Enjoy a little bit of Halloween and Fall Fun at the Maryland Zoo in Baltimore throughout October, ending this year ON Halloween!