Scalping free tickets in Golden Gate Park (plus "Extreme Mammals'')

I saw a scalper asking $25 per for tickets to the King Tut exhibit at the DeYoung this morning. The problem is: tickets are free today! Not very nice if you ask me. Also, I saw some employees of the California Academy of Sciences moving a big, scary-looking crate into the museum's loading area. The crate said "EXTREME MAMMALS" in bold letters. What was in that crate, I wonder? I'm imagining a yeti or a sasquatch. Or a pair of snow-boarding giraffes.