BROOKFIELD – Brookfield Zoo encourages animal lovers to bundle up and head on out to the zoo's annual FREEze Day this Sunday.

Throughout February, admission to the zoo will be free on Sundays, Tuesdays, Thursdays and Saturdays. A $10 parking fee still applies.

On Sunday, the Green Valley Dog Drivers will demonstrate dog sledding from 10 a.m. to 4 p.m. on the zoo's West Mall. The Lemont-based organization will also engage guests in games and musher talks with their canine teams.

Guests will also get a chance to learn about some of the zoo's animals during special Zoo Chats. At 11 a.m. they can get an update on the Mexican gray wolf pack at the Regenstein Wolf Woods exhibit, as well as the reintroduction program for the species.

Zookeepers will bring a red-tailed hawk to the West Mall at 1 p.m., where guests can learn about this bird of prey that is native to the Chicagoland area.

At 2:30 p.m., guests can learn some interesting facts about the African pinted dogs at Habitat Africa! the Savannah.

Athletico Physical Therapy will be on hand to present winter safety tips and activities.

More information is available at 708-688-8000 or by visiting www.CZS.org.