Animal experts aren’t entirely sure why pets blep, but in cats it may have something to do with the Flehmen response, in which they use their tongues to “smell” the air.
The Endangered Species Act is our greatest safeguard against extinction, and it's under attack right now. Animals can’t speak up to protect their own kind, but they can blep.
Noun: "(Internet slang, of an animal) the act of extending the tongue beyond the lips without opening the mouth fully"
The social media site is a sprawling series of discussion boards, ranging from deep debates on sociological theory to pictures of cats with their tongues half out (a “blep”).
2015, Hannah Shaw, Tiny But Mighty: Kitten Lady's Guide to Saving the Most Vulnerable Felines, page 187:
She's transformed into a healthy and hilarious cat who loves to chase toys, stick her tongue out (blep!), and cuddle with her mama.
Millennials' love for their pups is so intense, it's spawned its own language. Us hoomans chase our heckin floofers, iPhones in hand, snapping pics of their snoots and bleps to share with frens, posting with captions about the goodest boy in the world.