Alrighty here. Time for picking it over with a fine-toothed comb. 

Sener the mad
Sener the Mad
Camoflauged by their valuable hides
Camouflaged 
Aroike are powerfully built to a wiry frame similar to that of great apes or overlarge monkeys. They possess retractable claws on both hands and feet. Three distintive features include their face, tail, and 'wings'. Their face has been likened to the face of a bat stretched over the skull of a baboon, tails uniformly reach the size of twice the height of the beast, and what appear to be wings are in actuality flaps of skin which extend from wrist to ankle. Possible colorations include brown, gray, and black.
distinctive.
Also, how big are the claws? Are we talking cat-sized appropriate claws, or are we talking meat cleavers?
When hunting the Aroike will work in groups of two or three, and will co-ordinate their efforts to ambush prey.
When hunting, the Aroike will work in groups of two or three and co-ordinate their efforts to ambush prey.
Both gliding and hanging in wait by a tree-branch are used to ambush their meal and eliminate it quickly. 
tree branch
Once an Aroike has captured its prey it will usually attempt to kill it by breaking the creature's neck with its powerful arms and jaws. If this fails then the hunting party will surround its prey and wear it down with blows from fists and attempt to grasp and trip with their tails. Once the creature is too tired to continue fighting the group will move in for the kill.
Once an Aroike has captured its prey, it will usually attempt to kill it by breaking the victim's neck with its powerful arms and jaws. If this fails, then the hunting party will surround their prey and wear it down with blows from their fists and attempt to grasp and trip the intended meal with their tails. Once the creature is too tired to continue fighting, the group will move in for the kill.
Aroike live in packs of ten to fifteen adults, and often twice as many children. 
Aroike live in packs of ten to fifteen adults, and often have twice as many offspring.
Predictably the alpha is often the most evolved Aroike present. There are approximately 80 packs spread throughout the Wildlands, totaling around 1040 individual Aroike.
Alpha. You've got it capitalized in other areas, so you have to follow through. 

Many packs have taken to building crude shelters out of wood and furs, as well as weapons and hides to protect their bodies. In spite of these localized living arrangements, each pack claims a territory of approximately 120 sq. miles. While they are only capable of crafting objects out of bone, stone, and wood, it is not impossible to see an alpha wielding an iron weapon. Similarly it is likely that the alpha will wear many suits of chain or other patch-worked armor over his massive frame. Because alphas rarely hunt they are the most likely to wear scavenged and heavy equipment of those who have been eaten by the pack.
Alpha, Alpha, Alpha. 
Many packs have taken to building crude shelters out of wood and furs, as well as using weapons and hides to protect their bodies... Similarly, it is likely that the Alpha may wear many suits of chain or other patch-worked armor over his massive frame. Because Alphas rarely hunt, they are more likely to wear the scavenged and heavier equipment of those who have been eaten by the pack.
Packs around Syliras form a loose-knit society which keeps in contact at least once a year, sometimes once a season. If one pack is threatened by outside attack or starvation it is not uncommon for them to barter for aid from another nearby pack. Inter-pack matings are common, as are meetings between alphas to discuss recent events and discoveries by the 'Aroike Kings'.
The packs located around Syliras form a loose-knit society which keeps in contact at least once a year, sometimes once each season. If one pack is threatened by outside attack or starvation, it is not uncommon for them to barter for aid from another nearby pack. Inter-pack matings are common, as are meetings between Alphas to discuss recent events and discoveries by the 'Aroike Kings'.
While size is variable they all possess great intellect, an understanding of speech and its use, thumbs for grasping or tool use, and an insatiable curiosity. It is estimated that at any time there are between 25 and 35 Aroike Kings spread throughout Syliras.
While size is variable, they all possess great intellect, an understanding of speech and its use, thumbs for grasping and tool use, and an insatiable curiosity. it is estimated that at any time, there are between 25 and 35 Aroike Kings spread throughout the Sylira region.
Unless you actually meant they're in the city...
They never travel more than a months time away from the nearest pack, returning to mate and discuss things with their kind as often as possible. Recently they have begun sneaking into cities and settlements to spy on the inhabitants. While they do not come to feed, invariably a prolonged stay in such an area is followed by strange disappearances and bloodless corpses.
They never travel more than a month's time away from the nearest pack, returning to mate and discuss things with their kind as often as possible. Recently, they have begun sneaking into cities and settlements to spy on the inhabitants. While they do not come to feed, invariably a prolonged stay in such an area is followed by strange disappearances and bloodless corpses.
Question about these Aroike Kings. Are they always inevitably male, as their name suggests?
Females cycle every two years, a blessing for the creatures which share land with a pack. The alpha randomly chooses which males mate with which females, and can be found bartering with neighboring packs for mating rights if offspring are unsatisfactory. Due to the erratic nature of the biology of these creatures, it is unlikely to find an alpha which mates with every female. Diversity is something the Aroike seek in mating.
Females cycle every two years, a blessing for the creatures which share land with a pack. The Alpha randomly chooses which males mate with which females, and can sometimes be found bartering with neighboring packs for mating rights if offspring are unsatisfactory. Due to the erratic nature of the biology of these creatures, it is unlikely to find an Alpha which mates with every female. Diversity is something the Aroike seek when mating.
Within one week a newborn is capable of walking, gliding, and climbing. Offspring are sexually mature at one year, and reach full height and maturity at two years of age. Life-expectancy is between twenty and thirty years.
Within one week, a newborn is capable of walking, gliding, and climbing. Offspring are sexually mature at one year, and reach their full height and maturity at two years of age. The life expectancy of an Aroike is between twenty and thirty years.
Some questions I had while reading up:
1. How fast do they move?
2. How many times stronger than a human are they, approximately, on average?