Trimming feet and hocks is the only trim recommended for your Papillon
Trimming the feet and hocks will make your Papillon not only look better, but he will track less dirt into the house.
Trim around and under the feet and trim the long feathery hair on the back of his lower legs a little; up his leg to his hock (heel bone) . A trimmed hock will show off the dainty, elegant appearance of your Papillon.