The favorite dog of Thailand's ailing monarch has died, days after a man was arrested under the kingdom's strict royal defamation laws for allegedly making a satirical online remark about the beloved canine.

The dog, called Tongdaeng (Copper), became both a household name and a publishing sensation in Thailand after King Bhumibol Adulyadej adopted her as a stray puppy and penned a heartfelt book about her attributes in 2002.

She was praised for her loyalty and obedience, with the book widely interpreted at the time as a parable about how Thais should live and remember their place within the kingdom's rigid society.