masterpiece, UHD, photorealistic, adorable pet, Santa's cute pet, unexpected pet, cute baby T-Rex, vibrant orange skin, large round eyes, smiling happily, sitting on Santa's lap, surrounded by a bustling crowd, amazed children, delighted expressions, joyful parents, twinkling Christmas lights, festive decorations, Santa's red and white suit, snowy background, winter wonderland, cheerful atmosphere, mid-shot, dynamic pose, little dino raising its tiny arms, excitement in the air, laughter and awe, trending on artstation, best quality, CG, cute and lovable, textured scales, playful expression, memorable holiday moment
