Something that people think of if they are extremely lonely; Common hentai character

A cute-looking chick with cat ears, a tail, and maybe paws and a few patches of fur. Catgirls usually act rather cat-like and always succeed in being very very cute and sexy.

Catgirls walk the line between Furry and anime. They have made furries of anime fans, and anime fans of furries.

If they were ever real (Even if it was just one) every anime fan in the world would likely honour her as some sort of god or ruler of the planet in a matter of days after the existence was proven.
All world order would crumble and rise from the ashes within a matter of days with everyone following the one Catgirl (Probably more but who cares one would be enough to do this) to lead us all into a new era that would be like it is now but just much nicer knowing that your ruler of the world was a catgirl or catgirls

In anime a girl with feline characteristics, usually with some fur, a tail and pointy little cat ears.

A cute and awesome (mainly anime) girl that has cat ears and a tail They often say Nya and act cat-like. They are very popular in the anime fandom. If only they were real.

Girls in their young teens who frequent scifi, gaming, and anime cons. That usualy sport cat ears and spout broken, often incorrect Japanese in an attempt to be more like an anime character.

That are prone to loud and ocasionaly violent outbursts in an attempt to get attention.

Basically the La Croix of furries