Generate a pleasing, birthday-themed illustration drenched in gentle hues of pastel colors to create a cozy, celebratory mood. At the heart of this captivating spectacle stands a short-haired Collie, its fur portrayed in fine strokes, flaunting a small party hat perched merrily on its head. Confetti flecks whimsically dance around it, and a fantastical birthday cake is nestled nearby, festooned with playful motifs of bones and paw prints as decorations, standing poised for a merry 'paw-ty'.

Generated with these themes: Short haired collie.

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