My boys just turned 9 weeks and over the last day or two I have notice them doing some face offs and pinning each other. There hasn't been any blood and I've only heard one tiny squeak since I was doing things in the cage but if I was any farther away I wouldn't of heard it. My main concern is I am bringing home my other babies Saturday and want it to all go well. Should it be fine? Are they just figuring out who is boss between them?