When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
10
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
Dolphins have names for one another.
18
One litter of kittens can be produced by more than one father.
57