It’s essential to rigorously inspect every truffle each day. Remember that the purpose of a truffle is its aroma - so if it still smells amazing then it’s fine to make use of. As all the time follow the rule that if it smells good then it is okay to use - if it doesn’t scent good then it ought to be discarded instantly. So the basic rule is - if it smells good then it is nice. If a truffle has gone very slightly tender, but nonetheless smells amazing, then use that one first. When the pet has completed nursing and is a bit older, use a ball you can safely disguise truffle oil-soaked cotton balls or bread inside and play fetch along with your canine.