[header] How to file puppy nails [title] Use an emery board for humans if you need an easy solution. [step] Classic emery boards are available at your local pharmacy for a very low cost. Emery boards will work just fine for filing a puppy's nails, although you may go through more than 1 emery board in the process. 
[title] Use a filing tool made for dogs if you have one available. [step] Many pet stores will carry emery board-type tools created specifically for filing dog nails.