What Is Love?

Love doesn't just exist in humans. Many species across the animal kingdom have life-long monogamous mates.

Key Facts In This Video

  1. People who are in love have heartbeats that sync up when they look at each other. 00:57

  2. Sex is a key indicator of the bond between a couple. 06:08

  3. Oxytocin is known as the "attachment hormone." 08:33

Written by Curiosity Staff February 13, 2015

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