User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-4361439-20130528183518/@comment-1883969-20130601035909

If you look on the bottom of the King Shakalaka's mask you can see eyeholes and a small tube just like Cha-Cha. Seeing that more than just Cha-Cha and Kayamba having these, it can be assumed that the tube, whatever its use, is ideal for their survival. Also, maybe the shakalakas' heads are pointed do to evolution? I mean, they dig when they retreat, and the enemy shakalakas in Freedom 2 and Unite even ditch their maks when they flee, so maybe their pointed heads helps them pierce through the ground better when they're digging.