The Pangolin is a passive mob that spawns in the Savannah Biome. Like the Shulker if attacked it will curl up into a ball and will have a higher defense. It will uncurl 10 seconds after you walk 30 blocks away and continue strolling across the savannah. Like the sea turtle once baby is grown to an adult it'll drop a pangolin scale which can be used in brewing a Potion of Defense. Depending on the potion level it will give you armor points even if you aren't equipped with armor.
Potion Level 1 = Iron armor (full set) Potion Level 2 = Diamond armor (full set) Btw doesn't work with full set of diamond armor :(
The scales can be used to improve shields make them have higher defense.You could feed them Spider eyes to breed or grow them to adults for the pangolin scale.