CLEAN : US Secret Service dog receives animal bravery award for protecting Obama

The transcript discusses the recognition and awards received by a retired dog, including the PSA and CDC's involvement, an international award for an AUS Dog, the Medal of Valor from the US, and the PDS Order of Merit. The dog, now retired, enjoys a life of leisure after years of service, having been honored for its distinguished service to society.

What makes this award special for the dog mentioned in the text?

What does the PDS Order of Merit recognize?