WITH his sleek black feathers, sharp beak and wings there would seem to be little disputing the facts: this is a crow. It's just a shame no one has got round to explaining that Jack - the bird that thinks he's a dog. When the Notaro-Livingstone family first discovered their confused pet he was too small to fend for himself and so they took him in and cared for him. But after just ten weeks of living with the family, the crow has some serious identity issues. Joe, 11 said: '"I found Jack when I went fishing - he was so tiny and he couldn't even lift his own head. "I brought him home and we looked after him now he thinks he's a dog and he tries to protect us - he even jumps on the postman's head.' The family, from Huntsworth, Somerset, already has five other dogs. Jack will often disappear for the day but returns home to hop around the worktops and drink from the kitchen sink. Joe's sister, 12-year-old Cheryl, said:"'Whenever we get in the car, he jumps in too because he wants to come with us. 'And when mum comes back, he jumps on her lap like an excitable puppy.   'He is stubborn but really thinks he is part of the family.'