Amanda Macias/Business Insider
My cat-lady selfie with Harlem.
Happy National Love Your Pet Day!
$4 cats are kept as pets in the US.
My temperamental calico cat, Harlem, is one of them.
And while she's the only one I have, she embodies many of the most common, and most perplexing, cat stereotypes.
So why does she - and the tens of millions of cats like her - act that way?
Here are some explanations, backed by cat researchers, for why our feline friends behave the way they do.