Okay, as many know, my 2 reds and 2 B&W's have been housed together for a few months now without any problems. All bask together, etc. They are 2 males/2 females. The last few days the male B&W has been huffing at the red female and has on occassion opened his mouth towards her tail. I have not witnessed any biting taking place and am looking for insights from the more veteran owners. Is this an intimidation behavior?
I've heard stories of both mating rituals and signs of intimidation over territory.......

Thanks!!!

Greg