We're answering ten questions as quickly as we can in this episode of But Why. Why do onions make you cry? How do hummingbirds hum? Why do flamingos stand on one leg? Do moths have veins in their wings? Do cats that share a home have the same meow? What was the first book? How do libraries get money if people borrow books for free? Why do people have fidget spinners? Why can't my stuffed animal get wet? And how do pigs poop? Can we do it all in 20 minutes?!

How is bread made? Who made the first cake? Why shouldn't you touch raw eggs? On this episode of But Why, we're talking about baking. We get a lesson in bread making on a field trip to King Arthur Flour. Later, the Botanical Society of America weighs in on a recent episode where we talked about why some berries are poisonous.

In this episode we're celebrating the official return of summer to the northern hemisphere by answering some summertime questions! How do fireflies glow and can they control how they blink? Why are owls nocturnal? How do they swivel their heads around? And how do they hoot? Plus a few burning questions about why bug bites itch, why poison ivy and caterpillars and berries can all be poisonous, and how come we have to wear sunscreen! We'll get answers from wildlife biologists Kent McFarland and Bryan Pfeiffer. Plus we hear an episode of one of VPR's other podcasts, Outdoor Radio.

How are babies made? We speak with Cory Silverberg, author of What Makes A Baby, for answers to questions about how we all come into the world.

We recently did an episode all about dogs. But after that came out, Nash, from Fort Dodge, IA, sent us a question wondering if dogs ever get strep throat. So we reached back out to Jessica Hekman to get an answer!

This episode may not be suitable for our youngest listeners or for particularly sensitive kids. We're discussing animal ethics with author Hal Herzog. In a follow up to our pets episodes, we look at how we treat animals very differently depending on whether we think of them as pets, food, or work animals. Why do some cultures eat cows and others don't? Why do some cultures not have pets at all? And is it okay to breed animals like dogs that have significant health problems even though we love them? Herzog is the author of 'Some We Love, Some We Hate, Some We Eat: Why It's So Hard to Think Straight About Animals.'

Download our learning guides: PDF | Google Slide | Transcript

Why do dogs have whiskers? Why are dogs' eyesight black and white? Why do dogs have so many babies? Why do dogs have tails and we don't? Why are dogs thumbs so high on their paw? Why don't dogs sweat? Why do dogs roll in the grass? Why aren't dogs and cats friends? Veterinarian and dog scientist Jessica Hekman has answers.

Download our learning guides: PDF | Google Slides | Transcript | Coloring Page | Dog Breed Quiz | Answer Key

Why do cats purr? How do cats purr? Why can't we purr? Why do cats "talk" to people, but not other cats? Why do cats sharpen their claws? Are orange cats only male? Why do cats like milk and not water? Why are some cats crazy? Can cats see color? All of your cat questions answered with Abigail Tucker, author of 'The Lion in the Living Room.'

Who was the first person? Paleoanthropologist Adam Van Arsdale answers one of the most frequent questions we get here at But Why. Also: how does evolution work? Was there a first of every living thing? How did the first animal come alive? How did monkeys turn into people? And what did cavemen eat that we still eat today?

For 20 years, brothers Chris and Martin Kratt have been taking kids on adventures around the world through their TV shows, including Wild Kratts, Zoboomafoo, and Kratts' Creatures. They spent many childhood summers exploring the wilds of Vermont. In this special episode, we are sharing a Vermont Edition interview Jane did with the Kratts for her other radio show.