Goats will frequently paw the ground just to make a comfortable, cool place to lay down. They will paw at the food trough or water bucket to let you know that they are thirsty or hungry.
Not every goat is a biter, but some goats do bite as a form of communication. They may simply be playing but often they are either communicating that they are irritated, or they are simply trying to get another goat’s attention.