Thank you all for your advice, reading each and everyone's different stories has given me a positive outlook regards Toby. I/we do now agree, that he does not have this aggressive gene, and I now realise he just doesn't take kindly to being handled, as if he is unwary of whats going on/being done to him, especially behind his back, which in itself is a problem that needs to be resolved. I need to be able to touch him regards to drying him if he becomes wet after a walk, also other people such as my pet groomer when the time comes for him to go to her, and now, when I have to put drops in his ears (for cleaning purposes) and also applying advocate between his neck and shoulder blades for his regular worming/flea treatment. He also attacks my OHs hand (not mine since being bitten last week) when he attaches his collar and lead. In the perfect world of course it would be simpler to just leave his collar on, but as he spends the odd time during the day (mainly supervised ) plus unsupervised nigh-time sleeping in his cage, we cant take the risk of him catching it on any small hook inside, and strangling himself.
I am feeling much more optimistic about Toby in turning out to be a fine adult dog, it just seems harder this time round than it was with any of my others.
On an after-note, when we brought home our two dogs eight years ago, with only seven months between them, we basically replied to an advert, went to see the pup and brought it straight home with us, the same day, got on with rearing, with only minor problems, and turned them both into well behaved adult dogs. With Toby, he was planned almost a years ago, we placed our names on the waiting list, knew the day he was going to be born, saw pictures of newborn pups first day, went to choose him three weeks later, so as you can see, a lot of planning went into Toby, but no planning whatsoever into Benji or Megan, same as my late Petra. I cant wait for his puppy socialisation training to start Tuesday. I so want to be writing a different story about our Toby in two months time.