the blue tonged macaroni penguin
The Chow Chow is the most well know purebred dog with a wholly black or blue tongue, but the chow is not the only breed with a black tongue. The Chinese Shar Pei also has a blue/black tongue.
A giraffe's tongue is 18 to 20 inches long and blue-black colored. Some people think the color is to keep the tongue from getting sunburned.
Well, as they are called black bears, a black bears tongue is actually blue.
I believe the blue waffle
Elephant
depends, is its blue then its tongue is orange but if its orange its tongue is blue :]
It is a gold lion with a blue tongue and blue claws.
Blue Whale
The Blue Whale. I just saw a show on TV and the said that its tongue weighed as much as an elephant!
Bluetongue is an Orbivirus which is spread by Culicoides species (biting midges) from animal to animal.
Chow chows tongues are blue/purple. You should search some pictures of them.