Echo is just about 1 1/2 now. Over the past few weeks, she's been chewing like her life depends on it and more hyper than normal. Do they go through more puppy phases at this age? She's not been bad, only chewing her toys and wanting to play more than normal, but I was just curious. She has gnawed an entire antler down to nothing in less than 2 weeks after having it for over 6 months and barely denting it! She's always been a big chewer, but it was down to just a few light chewing sessions a week, now it's at least one good one a day.