Adopt-A-Senior-Pet Month Roots for the Underdogs

(CNN) -- It's been said time and again that you can't teach an old dog new tricks, but what about giving one a new lease on life?

Animal rights organizations like the ASPCA and shelters nationwide have taken to observing November as Adopt-A-Senior-Pet Month. To mark that occasion, some of the top senior pooches on social media are taking the cause into their own hands ... er, paws.
Marnie, a 12-year-old Shih Tzu, is one of them.

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