Tā bǎ gǒugou dàngchéng zìjǐ de máoháizi yīyàng téng'ài.
She dotes on her dog as if it were her own furry child.
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usage
Originally meaning a young child (hair-covered baby), 毛孩子 has been reappropriated by pet owners to refer to their cats or dogs. It's a warm, playful term used especially by people who treat pets as family members.