It all started with a simple question: "Do snakes fart?"

Dani Rabaiotti had no idea. But the zoologist and University College London PhD student knew she could probably tap her scientist friends on Twitter and find an answer to her brother's simple query. So she asked snake expert David Steen what he thought.

But the smelly questions didn't end there. What about fish? Cheetahs? And dinosaurs?

Soon, the hashtag #doesitfart? was born.

Now Rabaiotti, along with another animal expert, Nick Caruso from Virginia Tech, have compiled their answers into a book that answers the question "does it fart?" for more than 80 different animals, including humans and dinosaurs.

"The farts basically brought us together," Caruso said.

Here are a few of our favorite flatulence questions, as answered by the new book: