The royals shared a photo of the tiny pup wearing a pink collar on their social media accounts on Monday, writing: "Today is Animal Day! Meet Mambo, the newest member of the Royal Family!"
King Willem-Alexander, Queen Maxima and their daughters, Princess Catharina-Amalia, 17, Princess Alexia, 16, and Princess Ariane, 14, are already the proud owners of three Labradors called Luna, Skipper and Nala.
WATCH: The Queen and royal family play with their dogs at Balmoral in the 1950s
To mark last year's Animal Day, the Dutch royal family shared a sweet photo of their pooches playing with a ball on their royal estate, Landgoed De Horsten, in Wassenaar.
The arrival of the royals' new puppy comes just after Princess Alexia's move to the UK in August.
The royal family's new puppy, Mambo
The teenager is studying for her International Baccalaureate at the UWC Atlantic College in Llantwit Major, Wales, for the next two years. Alexia has also been joined at the college by the heir to the Spanish throne, Princess Leonor, 15, who is the eldest daughter of King Felipe and Queen Letizia.
The royals also have Labradors called Luna, Skipper and Nala
The Netherlands royal household also confirmed last week that a new book will be released to mark Princess Catharina-Amalia's 18th birthday on 7 December.
Writer, comedian and singer, Claudia de Breij has written a personal book based on her encounters with the heir to the Dutch throne.
The book, which is titled Amalia, will be published by Uitgeverij Pluim in mid-November and will also contain photos from the princess's private archive.
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