When someone (for instance, an older relative) seems stubborn about learning something new (say, how to turn on a computer), he or she might shrug and use this tired expression. And when that person does, clue him or her in to this fact: With the proper training, even stubborn breeds of mutts can learn to heel, sit, and roll over well into their golden years.
Golden people to change their habits or acquire new skills is impossible. puppies are teachable, but older dogs are less apt to be able to be trained, or so popular wisdom had it. by the same token, an octogenarian who has read the morning newspaper for decades is unlikely to be willing, much less eager, to switch to the online edition.
Picture Credit : Google