If in doubt we recommend you order the medium/large size bandana.
If the bandana is too large when it arrives you can roll the top over a couple of times before tying it around your dogs neck and this will reduce the size of the bandana. Voila! A perfect fit! If you have a growing pup he/she will soon grow into the bandana.
Please take a look at the Puppy Bandana Size Guide where you will find the dimensions of each of the dog bandana sizes we have available.