In this episode we check out three different zoos after visitors leave and the gates are locked. We’ll hear about some adventurous penguins, learn how chimps tuck themselves in and find out why it’s important to smell a gorilla first thing in the morning. Oh, and did you know sometimes zoo animals need a ride from the airport? All this and a brand new mystery sound! This episode is sponsored by: <ul><li>Indeed (<a href="http://indeed.com/BRAINSON" class="c-link">Indeed.com/BRAINSON</a> - to start hiring now. Terms and conditions apply. Cost per application pricing not available for everyone.)</li><li>Shopify (<a href="http://shopify.com/brainson" class="c-link">Shopify.com/brainson</a> - for a free 14-day trial and full access to Shopify's entire suite of features)</li><li>Outschool (<a href="http://outschool.com/brains" class="c-link">Outschool.com/brains</a> - save $15 on your child's first class)</li><li>Bombas (<a href="http://bombas.com/brainson" class="c-link">Bombas.com/brainson</a> - get 20% off your first purchase)</li></ul>

Did the Brontosaurus really exist?

Brains On!® is a science podcast for curious kids and adults from American Public Media. Each week, a different kid co-host joins Molly Bloom to find answers to fascinating questions about the world sent in by listeners. Like, do dogs know they’re dogs? Or, why do feet stink? Plus, we have mystery sounds for you to guess, songs for you to dance to, and lots of facts -- all checked by experts.