Not only did their puppy teeth come in almost over night;last Friday night the coyotes had a kill close by and were making their yelps and howls and all 9 puppies howled back,long after the yotes stopped ,I went down with 10/22 just to check everything out, and it was such a cool sight,all 9 front feet up on the wall heads thrown back and making noise for all they were worth like they were saying this is our turf you best move on!