Pete and Hercules

I do not know what is going on with Pete and Hercules, but they have become very close friends. I watched Hercules playing with Pete's tail and I just thought that was brave. Then I saw Hercules rubbing up on Pete's chest. I do not know if maybe Pete was not feeling well or what was going on, but I have not seen any of that since then either. There for a quick minute they were best friends though.