One litter of kittens can be produced by more than one father.
57
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11
Dolphins have names for one another.
18
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81