Rev9:10 And they have pointed tails like scorpions; and in their tails is their power to give men wounds for five months.
Rev9:19 For the power of the horses is in their mouths and in their tails: because their tails are like snakes, and have heads, and with them they give wounds.
Rev12:4 And his tail was pulling a third part of the stars of heaven down to the earth, and the dragon took his place before the woman who was about to give birth, so that when the birth had taken place he might put an end to her child.