With a new litter of ten, I am once again faced with the problem of identification of each individual puppy. I normally cut their fur in differant places, like right back-leg, neck-base etc. One year I tried nailvanish but that was a total waste of time I felt. The marking was never clear enough for me to identify each puppy at a glance. I have seen differant breeders using differant collars. To me there is the danger of the puppies getting caught up in each others collars, so I would feel very uneasy about that. Even if I was to use the ones for cats, with elastic pieces. Any methods out there I am not yet aware of?