How do I love thee? Let me count the ways. From necking giraffes to monogamous parasites, creatures of all shapes and sizes flirt and couple up in rather unexpected ways.

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PRODUCTION CREDITS

Digital Production: Katherine Wu & Ari Daniel

Editorial Review: Julia Cort

© WGBH Educational Foundation 2018

MEDIA CREDITS

Visuals & Videography: Sandeep Robert Datta Michael Hsieh Greg Kestin Stephanie Muscat Edwin Scholes Spencer Wong Saad Amer Design NASA The Macaulay Library at the Cornell Lab of Ornithology flickr | Valentina Storti Noun Project | Chanut is Industries, Danil Polshin, David, Lucid Formation, Milan Gladiš, Road Signs, Tony Wallström, Wira wikimedia | AngMoKio & Bryce McQuillan pixabay.com shutterstock.com

Music: ­APM

Sound Effects: Erich Jarvis, Jonathan Chabout, Karl Bates freesound.org | aviaaroo, InspectorJ, listeningtowhales, Tito Lahaye