The inquest into the death of Harry Harper heard that the family had owned dogs for a number of years and that the dog concerned, "PJ" a Jack Russell Cross had never shown any previous aggression or violence.
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Rainbows Hospice children and their siblings made the festive video with a twist, to wish merry Christmas.
The incident caused the Hagley Road to be closed. It's thought there are no injuries.
Two children reported seeing a boy approached by a man wearing all black and a mask, but the boy ran away.