<http://schema.org/alternativeHeadline>
"National Puppy Day is a ridiculously adorable holiday organized to educate the public on the horrors of puppy mills, promote non-pet store adoptions and, above all, celebrate the puppies in our lives."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/family/pets/stories/16-puppy-photos-that-will-melt-your-heart>