Keen Smell. The skorpadillo has advantage on Wisdom (Perception) checks that rely on smell.

Protective Ball. The skorpadillo can roll up into a ball as a reaction, increasing its natural armor bonus to +2 (15) but decreasing its walking speed to 0 feet. Unrolling costs an action. The skorpadillo can still make a Sting attack in this state. 

Multiattack. The skorpadillo makes two attacks: one with its bite and one with its sting.

Bite. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 2) piercing damage.

Sting. Melee Weapon Attack: +4 to hit, reach 5 ft., one creature. Hit: 7 (1d10 + 2) piercing damage, and the target must make a DC 12 Constitution saving throw, taking 22 (4d10) poison damage on a failed save, or half as much damage on a successful one.