Last night on The Tonight Show, Jay Leno kept his word and sported a grizzly gray mustache for losing a round of St. Patrick’s Day–themed bowling to Jimmy Fallon last week. Plus: In honor of National Wildlife Week, cute and terrifying animals took over Conan's stage — a Burmese python crushed the lanky host's forearm, an adorable baby brown bear swung to and fro, and Conan dodged a vulture. On Jimmy Kimmel Live, Gael García Bernal flaunted his rat tail. Plus, January Jones played hammershlagen with Jimmy Fallon. Watch our compilation to see what you missed.