Cryptid Wednesday: the Chupacabra

In the interest of developing some Swords & Wizardry content, and following through on my desire to make up some cryptids, I'm hereby declaring Wednesday to be Cryptid Wednesday on this blog. We'll start with a modern classic.

Chupacabra

Hit Dice: 3
Armor Class: 6 [13]
Attacks: 2 claws (1d3), 1 bite (1d6)
Saving Throw: 14
Special: Suck blood, fear effect
Move: 18
Alignment: Chaos
Challenge Level/XP: 5/240

Best known for killing livestock (particularly goats), a chupacabra is a reptilian humanoid with scaly grayish-green skin. Sharp spines run down its back. They stand 4' tall but can jump as far as 20' in a single powerful hop. The chupacabra is a hematophage, that is, a blood-eater; it latches on with powerful jaws and if the victim fails a saving throw will extract blood, doing 1d3 damage per round. If over half of a victim's blood is drained in this manner, there is a 25% chance that a vital organ is sucked out by the chupacabra, and the victim will die in 2d6 turns without magical healing. If cornered, a chupacabra has a 2 in 6 chance of giving off a piercing screech. This will alert any creatures within earshot. When it screams the creature's eyes will also glow deep red and it gives off a stench like brimstone, a combination which forces observers to make a saving throw or be overwhelmed with nausea for 1d6 rounds.

The chupacabra is intelligent but does not speak any tongue known to man. Its forked tongue makes its speech more akin to that of serpent-men. They tend to be solitary hunters and will have a fight-or-flight reaction to humans.