We have trained many Puggles and they are great little dogs. You could have 2 pups from the same purebred litter and still be asking the same questions. Every dog in every litter is it's own unique dogonality. This really has nothing to do with the fact they are Puggles. This has to do with their ages, the fact that you have 2 young dogs together and you need to be doing more consistent training with each one.
By the way the Puggle in the picture is gorgeous!
Love Them & Lead Them,
~Elizabeth & Doug
Dog Training the Way Nature Intended