Some of you may have read my thread about Alfie's resource guarding behaviour problems so you'll know what I'm talking about. For those of you who haven't, Alf became aggressive if anybody so much as put a foot near his bowl or tried to take anything, no matter what it was, from him. He'd bitten so many times (puncture wounds) I've forgotten how many, but with patience and understanding of the problem (and support from some members here) we got through it. He hasn't bitten for several weeks now and will allow most things to be taken from him and will leave higher value things when asked to do so. BUT, another problem, albeit less serious, has developed out of this. He no longer has the same enthusiasm for play. He'll still run after his toy, get it and bring it back, and allow me to take it from him (he'll bring it right to me) but without any of the exuberant enthusiasm he had before. The dog that bounded after it, came running back and waited eagerly for the next throw has disappeared. I've given him treats, lots of fuss and high voice praise when he brings it, and do all sorts to get him excited about chasing it again but he just sits there and when it's thrown, sort of plods after it and plods back. As for playing tug, he won't even entertain it. The trainer at dog classes suggested we play tug after successfully completing the challenges there, but he's just not interested. He'll sniff the toy, but as long as it's in my hand, he won't take it in his mouth. I've tried putting it on the floor, then when he has it, taking one end of it but then he just drops it. It's my guess that he's so used to giving things up now after all the work we've done on that, that he feels it's wrong of him to take the toy. He'll only take it if it's at a distance from me (like when we play fetch, but as stated, still without any real enthusiasm). When he's playing alone (he likes to throw small toys around himself and then chase them/catch them) he still has the same enthusiasm. Any ideas for what I can do to get him interested in playing these games again, or should I just accept that they belong in the past and find different games that he doesn't associate with biting (or whatever he's associating them with)? And if so, what games might they be? They'd need to be something that I can use as a reward after training. Any help and advice would be warmly welcomed.