Nothing would happen if the rat was free of disease. If a rabid rat licked you or bit you, there would be a good chance of getting rabies, and you would need to get rabies shots. But if a healthy rat licked you, nothing would happen to you.
If the rat is healthy, then it is unlikely to give you a disease in this way.However, if you have a propensity for letting small furry animals lick you, you are already pretty sick.
Nothing will happen he JUST licked you like a dog will lick a person. Your pet could also be licking you for the salt that that your skin produces.
It can be alarmed by the fact the tongue felt wet.
You would DIE!!
Lets just say... That rat would be MISERABLE. ( no, it wouldnt die.)
The rat would die because the venom would enter the blood stream.
They would remain childless.
You were mean
Radar Rat Race happened in 1981.
Peter Pack Rat happened in 1988.
Funky Lab Rat happened in 2010.
The same thing that happens if you give it to a diabetic person, except with a rat instead. If you get the dose correct, it will help with the symptoms of the diabetes. If you get it wrong, you'll probably kill the rat.