Blueish coloring on the tongue is due to excessive pigmentation (kind of likw freckles), and it is present in every breed. It's not as common as black, but it's still possible.
chow-chows have blue tongues
yes
Yes. Dogs tongues are 80 % cleaner then any other tongue (Including human)
no dogs tongues do not roll
Yes, dogs sweat from their tongues.
Just the different coloured coats blue Merle collies can have blue brown or blue and brown eyes so do some husky dogs and so do blue or red healers
yes, but most sweat through their tongue, which is why you see dogs tongue's sticking out. And also please correct your grammar i believe your question should be: Do any animals sweat? I think you could also improve your own grammar - tongues does not need a possessive apostrophe. The tongues belong to the dogs,(plural), so it should be: dogs' tongues.
well spots on dogs' tongues are just like birth marks...but i dont know of a certain breed having them
Dogs tongues are not black when the are dead.
You can make and find them in dogs tongues and cats tongues.
The Chinese chow-chow and the akita have black, bluish, or blue-black tongues, as do chow or akita crosses. There may be others as well. Some dogs that have a history of black dogs in their breeding, such as Golden Retrievers, have dark spots on their tongues.
No, dogs smell with their noses.