About time I started following @LOLGOP:
Fun Fact: Marriage doesn't exist in nature. Homosexuality does.— LOLGOP (@LOLGOP) May 26, 2012
Some tweeps are replying that some social bonds do exist amongst animals that vaguely resemble human marriage, which I think misses the point. All social species are able to form and uphold various kinds of alliances and partnerships for all sorts of reasons, but none of them come close to the level of cultural significance and even outright consecration that we attach to that uniquely human bond called ‘marriage’, be it social, political or religious. Nor do animals panic at imaginary threats to their unions and, by some fevered extension, to their society in general.
Frankly, all that means is that animals have their priorities in check.