"P" is for "Pacabra"

Pacabra

No. Enc.:  1d4 (1d4)
Alignment:  Chaotic
Movement:  180' (60')
Armor Class:  3
Hit Dice:  3
Attacks:  6 (4 claws, 2 bites)
Damage:  1d4 / 1d4 / 1d4 / 1d4 / 1d6 / 1d6
Save:  L3
Morale:  9
Hoard Class:  VI
XP:  140

Pacabras are 3-4' tall, hunched, hairless bipeds with tapered claws, jagged fangs, and blackened, necrotic skin.  They hop after prey with uncanny speed and agility, and make standing leaps of 25+ feet.

The diseased creatures' mouths swarm with infectious parasites.  Anyone bitten who fails a Saving Throw Vs. Poison contracts mega-mange [see below].

Mutations:  Enhanced Vision (Night), Pain Insensitivity [D], Quickness, Reduced Immune System [D], Toxic Weapon ("Mite Bite")

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Mega-Mange

Save Modifier:  -2

Infection Duration:  4 weeks

Affected Stats:  DEX -3, CHA -6, WIL -3

Damage Per Day:  1d4

Mega-mange is a skin disease caused by ravenous parasites.  Those infected are driven mad due to incessant itching (which actually dulls the pain of external attacks) and an overpowering thirst for the blood of the living.

Symptoms:  Complete hair loss, deadened skin, weeping lesions, agonizing itching, and literal bloodthirstiness.  Also induces both the Hemophilia and Pain Insensitivity Physical Mutation Drawbacks.