George has been off his NI food for quite a while and is currently eating small amounts of James Wellbeloved (not impressed!). I have noticed that he has now developed a 'doggy' smell and am keen to get him back interested in his NI.I gave him a portion of it today frozen and he ate half of it. Is it ok to give frozen? He will still eat frozen lamb bones and chicken wings. Think his teeth may be an issue as not noticed any fallen out yet but noticed new teeth coming behind the old.