Hay, hay - we have some bison birthdays to celebrate this May! 🦬 The whole herd had a ball with their fresh bale of hay that was as fun to play with as it was to eat. Come to the Detroit Zoo to wish bison Takoda and Teetonka a happy 18th, and Willow and Juniper a terrific third birthday! #detroitzoo #bison #birthday #enrichment