In episode 6, we go into more familiar territory...cats. Humans have known and loved cats for at least 4000 years...and yet despite all of that time...one aspect of cats remains shrouded in mystery...the purr.Sourceshttps://www.bbc.com/future/article/20180724-the-complicated-truth-about-a-cats-purrhttps://moderncat.com/articles/the-mystery-of-the-purr/#:~:text=Purrrrrrrr.&text=While%20the%20purr%20itself%20happens,to%20150%20vibrations%20per%20second.https://pets.webmd.com/cats/features/why-cats-purr#1https://www.businessinsider.com/phenomena-science-cant-explain-2019-1#scientists-understand-how-cats-purr-but-theyre-still-not-sure-why-they-do-7https://en.wikipedia.org/wiki/Purrhttps://www.mentalfloss.com/article/12312/how-do-cats-purr#:~:text=Biologists%20used%20to%20think%20that,the%20body%20into%20the%20heart.https://www.loc.gov/everyday-mysteries/item/why-and-how-do-cats-purr/Music: Thank you to Kai Engel for the use of our theme song "Homeroad". You can find more from them at: http://freemusicarchive.org/music/Kai_Engel/Satin_1564/Kai_Engel_-_Satin_-_09_Homeroad Thank you to Blear Moon for the use of their songs "Watching tower" and "Letting Go Again"You can find more from them at: http://secretpress.bandcamp.com. And thank you to Sergey Cheremisinov for the use of their song "The Healing". You can find more from them at: http://freemusicarchive.org/music/Sergey_Cheremisinov/The_Healing/The_Healing.