In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
When cats are happy, they may squeeze their eyes shut.
10
One litter of kittens can be produced by more than one father.
57
Baks the blind boxer has a seeing eye goose named Buttons; a four-year-old goose who leads the pup around everywhere either by hanging onto him with her neck, or by honking to tell him which way to go.
16
A puppy is born blind, deaf, and toothless.
16
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
Baby rabbits are called kittens.
6