Not all of them do but I think most sometimes do. There are those here who are frequent tongue tipsters (Is that what they're called?) which add to their cuteness.
aWW, Bella's so cute. Mine don't really stick out their tongues unless they're really pooped out and panting. Wish they would do it more though ...it's a great look!
On some bulldogs it can be exaggerated due to their short skulls. BabyGirl has never showed her tongue but her bottom toofies show. Wilson only once in a while will have a tongue tip out. Like he forgets to pull it all the way back in. Bella is still a puppy and has got a lot of growing to do. I think it's the cutest thing ever when they show their tongues or toofies. I can't resist touching Wilsons. Sometimes it will be dry to the touch but it rehydrates nicely.