This tutorial will help you to speed up the process of creation quadruped walk cycles. Dont manually copy keyframes from left to right but instead use walk cycle control tool.
Deer 3d model - http://www.cadnav.com/3d-models/model...
Bonus tools - https://apps.autodesk.com/MAYA/en/Det...
Tutorial for the reference - • Animating Horse Walk Cycle
Tutorial 2 - https://vimeo.com/202205778