HRH loves chewing on soda bottles too. We just jave to be sure to take them away when she starts getting pieces off. It usually takes about 10 minutes.
Cute pics! its the little things that puppies like to chew. lola gets the cap off, we put it back on once, takes her much less time to get the cap off the second time, then its to the recycling. Then we watch for the ring, take that immediately, and then she can chew the bottle neck. we make her fetch it once or twice too.