no dogs tongues do not roll
Yes, dogs sweat from their tongues.
yes totally dogs tongues are cleaner than a cats tongue dogs can just naturally keep there tongues clean.
what kind of diseases or germs can humans catch from dogs tongues
No
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there tongues are not ruff a cats tongue is like sand paper. but dogs do have little hairs on their tongues just like humans do
No, dogs smell with their noses.
You can make and find them in dogs tongues and cats tongues.
Yes. Dogs tongues are 80 % cleaner then any other tongue (Including human)
Dogs DO NOT sweat through their tongues. You have been misinformed. Ask a professional for specifics.
I'm unsure if there is an actual name for it, but they use their tongues as a spoon, curling the tongue backwards and pulling the water into their mouth.