Babies are known to run a fever each time they cut their molars. Other symptoms that show a baby cutting teeth include crankiness, increased salivation and mild discomfort. However, a fever may not necessarily be tooth related but it is important to take the baby to an pediatrician when you notice any of these signs. Check out http://www.livestrong.com/article/533481-does-a-baby-run-a-fever-while-cutting-molars/ for more information.
Sometimes or so they say. Mine never did. Even so, if a baby has a fever you should never assume thats the reason. There are many reasons why a baby can have a fever. Best to have a doctor check them out. Better safe than sorry.