What happens when Grumpy Cat and Lil Bub meet? Vine videos show

What happens when two Internet feline superstars with seemingly opposite personalities meet?

Cutie Lil Bub and sourpuss Grumpy Cat met each other at the Internet Cat Festival in Minneapolis, Minnesota, with both felines tweeting Vine videos of the event.

Lil Bub's Twitter account contained a Vine video showing the first time the two cats met.

A second video showed the two cats in a "staring contest." "BUB vs GRUMPY. NOW," read the caption.

The third video showed the two felines "chatting."

For her part, Grumpy Cat had her own video of her meeting with Lil Bub.

Lil Bub, who has a serious bone condition that leaves her paws deformed and her tongue sticking out, has her own clothing label and horde of social media followers.

A separate article on Mashable said the two cats appeared to be "mingling and strategizing world domination."

"Tardar Sauce (aka Grumpy) looks nonplussed by the whole affair (probably just trying to play it cool), and Bub looks slightly frightened at first (surely, just nerves). We're predicting BFF status in a matter of hours," it added. — VC, GMA News