A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
10
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
The Savannah is the largest domestic cat breed. It resembles a small leopard and behaves like a dog. They can grow up to 40 lbs, have an eight foot vertical jump, and can be trained to walk on a leash and play fetch.
17
One litter of kittens can be produced by more than one father.
57
Dolphins have names for one another.
18