The Cal Academy of Sciences has amassed quite a motley crew of lovable mascots — Pierre the wetsuit-wearing penguin, Claude the albino alligator and Lemondrop, the 15-foot long (also albino) python, who's been slithering around the museum as the star of its latest exhibit, Snakes and Lizards. 

To get up close and personal with the guys, there's the penguin live cam app, yes, but there are also sleepovers. And now through August 20th, you can save $20 on the sleepover package (which includes an overnight stay at the Academy, special live animal presentations, access to all the exhibits, an after-hours planetarium show and a late night snack and breakfast) with promo code PPAUG20.

So if you're looking for a birthday party idea for animal-curious kids (over 5 years old), this one's for the ages. 

Get tickets here (promo code PPAUG20).