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Thanks to you all for the answers. We had him checked by the vet as soon as he arrived.He is the sloppiest loveable dog most of the time and we spoil him! When I said we squirted him with water that was when he was really naughty and it was only one of these hand held spray bottles, which unfortunately has now lead to him playing and drinking the water when the garden hose is going. When he is growling I can go up to him and hold his muzzle and tell him to stop and there is no aggresion to me or our other dog Hector. I think 'Nannyjill 'may be right in that something that my husband does unconciously is triggering something from his past. We'll just keep persevering with the little luv and hopefully like 'ummmm 'said he'll right him self. We have had GSD, labradors,spaniels, retrievers but have never had one lwith problems ike Tyke