Wildly in Love
Chimpanzees
These primates would much rather find love in short-term bonds than take the plunge. Lovers groom each other, kiss, make up after fights and can even take mini-vacations together. What's more, bonobos, close cousins of chimps, mate face-to-face.
Get the Latest Photos from Time.com
Get TIME photos and pictures of the week delivered directly to your inbox.