The difference between a cats tongue and a dogs tongue is that a cats tongue is rough and looks like there is little teeth on the tongue. The dogs tongue is smoother than a cats and is most of the time longer than a cats tongue. Also a dogs tongue can be different colours. It seems to be said also that a dogs tongue can heel a wound.
No. Tongue is a separate meat.
Temperature regulation is a critical tongue function for a dog. Since they don't sweat, dogs cool themselves predominantly through their tongue.
No
No.
Yes, since humans can get sick from drinking it, then dogs can too.
Not if the dog is alive
Dogs sweat through their Paws and their tongue.
No.
I'm going to assume you mean 'singe your tongue'. It means to burn your tongue, usually by eating or drinking something that was too hot.
Dogs have long tongues because they use them to eat and drink, When drinking, they submerge their tongue in water and then bring their tongue back as quickly as possible. If dogs had tongues like humans it would take forever for them to get enough water to stay hydrated. The same thing goes for how does eat their food.
Does yours? if not then no