My Bearded Dragons

I have two bearded dragons. The female is Hillary. The male is Bud. I keep them separated because bud chewed off the tip of the tail of Hillary. And I don’t want any harm to come to Hillary, plus it cost $270 to fix. I will have pictures of them soon. There is another lizard but my friend has him. His name is little dude. We think he is a male but I am not sure because we have not brought my lizards and little dude together sense when they were juveniles.