Meh-teh or yeti

A yeti would be a hostile mob that would live in the mountains in a cave or on the peak. The yeti would be asleep when seen but if you get close he will wake up and beat its chest and jump in the air about 70 blocks high and when land you will go flying of the mountain and the yeti will fall asleep again. The yeti will sleep on its face to be stealth.

The yetis home would either the peak of the mountain or a cave or just on the slope sleeping. The yeti sleeps because he all ready did his hunting and now is tired! The yeti will find frozen ponds with fish and break the ice and get the fish. You can see it with your spy glass but don't get to close because the yeti will attack you by doing the jumping in the air and knocking you off the mountain.

The yetis health would be 100. He will do a swing attack also that would do 8 hearts of damage. He would be 6 blocks high and would drop fish and yeti fur. 

The mountain peak home would have a pillar with a carved stone block shaped as a yeti. The cave would be icy and have stray pieces of would from cabins. 

 If you combine the yeti fur and leather armor in the smithing table you will get plus 1 armor added on your leather armor.

 If you defeat the yeti you will will get the advancement called yeti slayer! If you bring the yeti to the nether you will get the advancement sweaty yeti! If the yeti kills you the death message will be you are a true believer!

This idea would be cool because it would add challenge and fun to the mountains.