[Ziggy&Herald]

They have to fight to establish dominance. Otherwise they will never be able to live together. As long as you don't see blood, leave them together and let them work it out.

As for their teeth, if they are going at the bars hard and long enough I'm sure eventually a tooth will break. If you are going to keep them seperated with the bars. Try putting a piece of cardboard attatched to the bars if you don't have the extra Coroplast.