Dolphins have names for one another.
18
A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
10
One litter of kittens can be produced by more than one father.
57
Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
26
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13