In the Irish tale, Eachtra an Mhadra Mhaoil, Alexander, the son of the King of India was enchanted in the form of a dog with no ears and no tail, and despite his dogginess, was fully able to converse in human speech. Alexander’s brothers were in a similar form. This had been done by Alexander’s step-mother, Queen Libearn, who wanted her own son, called the Knight of the Lantern, to inherit the realm of India.
The Crop-Eared Dog went to Arthur’s court and received assistance from Bhalbhuaidh (the Irish version of Gawaine) in defeating the Knight of the Lantern, who was forced to return Alexander to his true form. Alexander duly inherited his father’s kingdom.