Fall In Line-Rogue

You are able to gain this feat after gaining 4 levels in rogue, and have a DEX score of 15+

You are able to perfectly match the pace, foot placement/steps, and gait of a humanoid creature your size or smaller. Doing so allows you to hide the sound of your footsteps, so long as you are withing 30 feet of that creature. 
Also, your footprints are harder to notice/find as long as the creature whose footprints you are following is your same size.