Ella Andrews was at the park with her step-mum and step-sister when she saw a dog come pounding towards her baby sister. The quick-thinking 7-year-old lifted her 18-month-old sister without thinking, and the dog bit Ella, taking a chunk out of her arm. Ella spent two days in hospital and required surgery. Along with her step-mum Kelsey Timms, Ella spoke to Lisa Barnes about her heroic efforts.

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