Almost every animal has a tongue, And EVERY mammal has a tongue.
A snake uses its tongue like a sensor, its can taste the air and determine if there is prey or predators near.
No animal truly sweats from its tongue, but some animals do pant to cool themselves in place of sweating. One animal that is known for this is a dog.
I think chameleon or anteater have the longest tongue......
Yes it is very normal if you play with it a lot, tongue rings will stretch no matter what because when you eat a lot of people tend to bite it, I bite mine all the time when I am eating. But that only stretches it a little, if you constantly play with your tongue ring, like I do you will stretch the hole, but it's not noticeable. If you were to actually try and gage your tongue piercing then it'd be noticeable, but if you're not gaging it and only playing with it, expect it to stretch, nothing bad will happen.
The infection caused their tongue to mutate in such a manner so that it can recoil and shoot out at survivors.
Snake.
Dog
Crocodiles.
crab
Dog
Everyone's tongue is in their mouth even an animal and it is always wet.