is the saying "You cant teach old dogs new tricks" true?

[stacwase]

You can most definitely teach an old dog new tricks! In fact, in Jake's case, he was much EASIER to train when he got older!. He's almost 7 now, and much easier to train now than he ever was. I taught him to heel in about an hour. Taught him "go to bed" in one day. When he was younger, he was just too energetic.