Hi ~ so we have had greyhound since February. Although at first he would freeze on his walks, we soon overcame this and he now loves his walks and is settled into the house. However, recently several issues have arisen, and I am hoping someone could give us advice on fixing them. The main one is bitting when he walks up. This has only happen in the last few weeks and I was shocked becasue it is so unlike him and his breed. This always takes place on the sofa, when he is in what we call 'zombie mode'. At first it was just at my dad, but yesterday he bit me too (it didn't draw blood but still left a mark), which was very surprising as he does trust me. I wasn't leaning over him or anything, I woke him up gently by saying his name and moved when I say he was awake, and that was when he went for me. He immediately knew he did something wrong though, and I think he genuinely felt bad. I firmly told him 'no' and he went to his bed. Obviously, he is no longer allowed in the sofa however I already miss being able to sit and watch TV with him, so it there any way we could fix this? (also: the first time he we went for my dad on the sofa I though it might be becasue he saw the sofa as his bed, so we imposed a 'only allowed on the sofa when the humans are on the sofa' rule which I think he understood, but evidently this did nothing). He is great at coming back to me in the park, with a near 100% success rate (I wouldn't let him off otherwise!). He is, however, very playful and really wants to play with other dogs. Sometimes he runs after a dog, and as soon as I call him he come back but often by that time the dog is already terried. It isnt terriers/small dogs he goes after, normally large ones like labs, and although they weigh more than him they still run away! We have had one embarrassing incident where a lab ran across the whole park after Len tried to play with him. I know there's not alot we can do about this, so is the only solution to keep him in the lead? (side note: he is always walked in a muzzle, just in case). Finally, as an extension to the previous issue we have a walking buddy (a springer poodle cross) who he desperately wants to play with. However, to put it bluntly hates him. She will bark at him, but Len only get more playful and start barking, and when she will growl at him an has nipped at him a few times. He still doesn't get the message though! My friend says that we should just leave them to sort it out, but after months it still hasn't gone away, so it there anything I can do? One more thing - we are going on holiday with my granny and she will have an 8 week old springer puppy with her. I'm worried Len will try and play with it and traumatise it, so how should I introduced them? Sorry, I know this is really long and I would be really grateful for any advice given. Although there are certainly issues, I just want to say that he is the most amazing, sweet, loyal dog anyone could wish for. Other than the problems he has, he is a dream in the house and on walks, and I couldn't recommend a greyhound enough. Thank you so much for taking the time to read this post and any advice would be really appreciated!