May I say thanks for your replys, I took charlie to obidience classes at the age of 4months old, he then had his jaw broken so we couldnt go for 5 weeks but I continued training in the house, we then went back to classes he did really well,trainer did say I was dealing with a very strong headed dog, I was training charlie on liver, then he had an upset stomach for 2weeks so i couldnt give the treats, back to training we went and the upset stomach came again, I have had loads of trouble trying to find a diet to suite as the vet did tests and said he had an allegy, charlie is on the NILIF programme and always has been from the age of 2months, he does drop his toys for me and I can take away his food without growling. This is why I cant understand why he has just started being like this. Do you think it could allso have anything to do with our new addition lulu who is a 2 year old female, just a thought, trying to give you as much information as i can.