Hi, We are seventy somethings and our sweet Shadow died. Not having long ourselves, we decided, possibly too impulsively, to find another. A puppy of 4 mo was available and we jumped. We had forgotten about puppies. This is our 4th sheltie. We are both a little lame and I worry about whether this little guy is being shortchanged. He's also a big guy and filled with all sheltie piss and vinegar. Love him to pieces.