What kind of creature is Gobbolino in Ursula moray Williams classic magic story?

Gobbolino is a magical cat in Ursula Moray Williams' classic story "Gobbolino the Witch's Cat." He is a sweet and gentle creature who longs to be a regular pet rather than a witch's familiar. Throughout the tale, Gobbolino embarks on various adventures, showcasing his kind heart and desire for acceptance. The story emphasizes themes of identity, belonging, and the quest for one's true purpose.