This peculiar dwarfish creature has red fur and bulging, frog like eyes. Its arms and legs are long and end with spindly digits lined with suckers. Its mouth gapes impossibly wide.
Taken from Creature Codex
The yara-ma-yha-who are a reclusive race of tropical humanoids with a bizarre and parasitic reproductive system. They prefer to live in lush jungles and typically make their nests among the branches of fig trees. Yara-ma-yha-who are excellent climbers, swinging from branch to branch with their long, muscular arms. Yara-ma-yha-who are very territorial creatures and rarely associate with one another. Humanoid creatures within their territory are closely watched, and anyone approaching their nest is viewed as an enemy.
Yara-ma-yha-who do not feed on meat or vegetation—rather, they feed on the vital energy of animals. They drain this energy via their suckered fingers and toes, leaving the prey enfeebled and weary but not permanently harmed. Predatory beasts of the jungle often follow the yara-ma-yha-who in hopes of picking off its weakened victims.
The reproductive habits of the yara-ma-yha-who are highly unusual, because they are themselves asexual. They require a living humanoid in order to reproduce, changing them into a new yara-ma-yha-who with a cocktail of magical fluids found in their stomachs. As the yara-ma-yha-who strips away the mind and identity of its chosen victim, the victim slowly shrinks, grows reddish hair all over its body, and becomes more rubbery and flexible. Yara-ma-yha-who will often regurgitate their victim partially transformed and then retreat. Such partially-transformed victims are often viewed with scorn and pity, and may seek out complete transformation if only to end their shame.
Yara-ma-yha-who CR 6
CN Small monstrous humanoid
Init +8; Senses darkvision 60 ft., low-light vision, Perception +12
AC 20, touch 15, flat-footed 16 (+1 size, +4 Dex, +5 natural); uncanny dodge
hp 76 (9d10+27)
Fort +6, Ref +12, Will +6
Speed 30 ft., climb 30 ft.
Melee 2 slams +14 (1d3+2 plus attach), bite +14 (1d4+2)
Special Attacks create spawn,strength damage, swallow whole (AC 12, 7 hp)
Str 15, Dex 19, Con 16, Int 8, Wis11, Cha 10
Base Atk +9; CMB +12 (+20 to maintain grapple); CMD 24
Feats Agile Maneuvers, Improved Initiative, Lightning Reflexes, Lunge, Weapon Finesse
Skills Acrobatics +8 (+16 when climbing),Climb +18, Perception +12, Stealth +20; Racial Modifiers +8 to Acrobatics checks when using Climb speed
Environment warm forests
Organization solitary or pair
Attach (Ex) When a yara-ma-yha-who hits with its slam attack, its suckers automatically latch onto its opponent. An attached yara-ma-yha-who is effectively grappling its prey, with a +8 bonus on all CMB checks made to maintain the grapple. A yara-ma-yha-who does not suffer any penalties to its Dexterity score when attached in this fashion. A successful CMB check or Escape Artist check allows a grabbed foe to escape, as normal.
Create Spawn (Su) Any humanoid reduced to 0 Cha by a yara-ma-yha-who’s swallow whole attack transforms into a yara-ma-yhi-who over the course of 1 minute. The transformed humanoid does not retain any class features or memories of its former life. A creature transformed into a yara-ma-yha-who can only be returned to its normal self via a limited wish, wish or miracle spell.
Strength Damage (Ex) Every round a yara-ma-yha-who is attached to an opponent, it deals 1d4 points of Strength damage.
Swallow Whole (Ex) A yara-ma-yha-who can only swallow whole pinned or helpless opponents, but it can use this ability on creatures up to Medium size. A creature swallowed by a yara-ma-yhi-who takes no physical damage, but suffers from 1d4 points of Charisma drain each round. A humanoid that suffers from 6 or more points of Charisma drain is reduced in size by 1 category if Medium size. This is a curse effect—a remove curse spellagainst DC 14 must be cast successfully before Charisma drain inflicted in this manner can be removed with a restoration spell. If the curse is removed, the creature’s size returns to normal. The DC is Charisma based.