(Dinosaur) Sinraptor, Silent Fang of the Forest
Sinraptor: The prehistoric nightmare with teeth like steak knives and a hunger for anything that moves!

Sinraptor is a sleek, sinewy predator stretching nearly 26 feet from snout to tail-tip. Its skull is narrow but powerfully built, lined with dozens of recurved, serrated teeth designed for rending flesh. Its forelimbs are relatively short but armed with curved claws, and its hind legs are muscular and built for speed. A low ridge of bony spines runs along its back, hinting at its lineage within the Metriacanthosauridae. Covered in pebbly, scale-like skin with mottled earth tones for camouflage, its yellow predatory eyes burn with a cold, calculating hunger.
Behavior
Sinraptors are solitary hunters, but display an eerie intelligence when stalking prey—circling silently, testing boundaries, and using terrain to their advantage. While not pack animals by nature, multiple individuals may converge on a single hunting ground if game is abundant, resulting in tense, competitive feeding frenzies. They display territorial aggression, often driving off or killing smaller predators.
Habitat
Native to lush river valleys and semi-arid plains of ancient lands, Sinraptors prefer environments with dense undergrowth or jagged rock formations that provide cover for ambush. Ancient bestiary texts place them in volcanic uplands and floodplain forests, where prey is abundant and the terrain benefits their stealthy tactics.
Modus Operandi
Sinraptor hunts with unnerving precision. It shadows herds or travelers from a distance, waiting for weakness—injury, distraction, isolation. Once it selects its target, it charges with terrifying speed, aiming to cripple with a leg-sweep or hamstring bite, then retreats briefly to let its prey bleed or panic. It prefers live prey, but is not above scavenging a fresh kill.
Motivation
Driven by an insatiable instinct to dominate its territory and feed, Sinraptor acts without malice but with relentless efficiency. Some ancient druids claim these creatures are avatars of primal hunger—apex spirits given flesh. Whether natural or mystical, Sinraptor is not driven by cruelty but by the cold, unstoppable logic of the hunt.
Sinraptor 5e
Sinraptor, Pathfinder
Sinraptor 3.5
Sinraptor

Large Beast, Unaligned
Armor Class 14 (natural armor)
Hit Points 115 (14d10 + 42)
Speed 50 ft.
STR | DEX | CON | INT | WIS | CHA |
---|---|---|---|---|---|
21 (+5) | 16 (+3) | 17 (+3) | 2 (−4) | 14 (+2) | 7 (−2) |
Saving Throws Dexterity +6, Wisdom +5
Skills Perception +5, Stealth +6, Survival +5
Senses Darkvision 60 ft., Passive Perception 15
Languages —
Challenge 5 (1,800 XP)
Proficiency Bonus +3
Keen Smell
The Sinraptor has advantage on Wisdom (Perception) checks that rely on smell.
Pounce
If the Sinraptor moves at least 20 feet straight toward a creature and then hits it with a bite attack, the target must succeed on a DC 15 Strength saving throw or be knocked prone.
Grappling Claws
If the Sinraptor hits a prone creature with its claw attack, the target is grappled (escape DC 14). Until the grapple ends, the Sinraptor cannot use that claw attack on another target.
Actions
Multiattack
The Sinraptor makes two attacks: one with its bite and one with its claw. It cannot use its claw attack if it is maintaining a grapple with that limb.
Bite
Melee Weapon Attack: +8 to hit, reach 5 ft., one target.
Hit: 20 (2d12 + 5) piercing damage.
The Sinraptor’s primary hunting weapon, capable of delivering a powerful, flesh-tearing bite.
Claw
Melee Weapon Attack: +6 to hit, reach 5 ft., one target.
Hit: 8 (1d8 + 4) slashing damage.
Primarily used to pin down or restrain prey, not to cause lethal injury.
Behavior (Naturalistic)
The Sinraptor is a solitary, ambush-focused predator. It uses stealth and terrain to its advantage, favoring dense undergrowth or rocky environments. When hunting, it seeks to knock prey off balance with a charging bite, then uses its claws to hold the victim in place while it finishes the kill. It avoids wasteful conflict and rarely vocalizes, relying instead on keen senses and silent pursuit.
Sinraptor

Large Animal (Dinosaur)
CR 7
XP 3,200
CE
Init +6; Senses darkvision 60 ft., low-light vision, scent +6; Perception +15
Defense
AC 18, touch 12, flat-footed 16 (+2 Dex, +6 natural)
HP 95 (10d10+40)
Fort +10, Ref +7, Will +4
Defensive Abilities ferocity, improved uncanny dodge
Offense
Speed 50 ft.
Melee bite +14 (2d8+7), 2 claws +12 (1d8+5)
Space 10 ft.; Reach 5 ft.
Special Attacks pounce, rake (2 claws, 1d8+5), trip
Statistics
Str 20, Dex 15, Con 18, Int 2, Wis 14, Cha 7
Base Attack +10; CMB +14; CMD 27
Feats Improved Initiative, Power Attack, Weapon Focus (bite), Skill Focus (Perception)
Skills Perception +15, Stealth +11, Survival +10
Languages —
Special Abilities
Ferocity (Ex):
Even when reduced below 0 hit points, the Sinraptor remains conscious and can continue fighting for 1 more round. It cannot act normally but can make a single attack or move action during this time.
Pounce (Ex):
If the Sinraptor charges a foe, it can make a full attack, including rake attacks, at the end of the charge.
Rake (Ex):
The Sinraptor can make two rake attacks, each dealing 1d8+5 damage.
Trip (Ex):
When making a claw attack, the Sinraptor can attempt to trip the opponent as a free action if the attack hits.
Tactics
Before Combat:
The Sinraptor relies on stealth and patience, stalking prey through dense foliage or rocky ravines. It prefers to ambush stragglers or isolated creatures, striking swiftly and savagely before retreat can be organized.
During Combat:
It opens with a charge and full attack using pounce. If its claw knocks a foe prone, it immediately follows with a rake, tearing into vulnerable flesh. It prefers to cripple or disable prey rather than kill outright, using trip attacks tactically to keep targets on the ground.
Morale:
If brought below 25% HP, the Sinraptor disengages if possible, relying on its speed and terrain familiarity. If cornered or defending a kill, it fights with feral tenacity.
Description
Known by hunters as the Silent Fang, the Sinraptor is a medium-sized but deadly predator that favors ambush over open combat. Stretching nearly 25 feet in length, it is built for speed and precision, with sharp, narrow jaws and powerful hind legs. Despite lacking the brutish power of larger theropods, the Sinraptor is no less lethal, relying on strategy, terrain, and surgical strikes to disable prey.
Its mottled skin helps it blend into forest and badlands alike, and its unsettling quietness—broken only by a hiss or shriek when striking—has made it a figure of local superstition in frontier communities.
Sinraptor

Large Animal
Hit Dice: 9d8+36 (76 hp)
Initiative: +3
Speed: 50 ft. (10 squares)
Armor Class: 17 (–1 size, +3 Dex, +5 natural), touch 12, flat-footed 14
Base Attack/Grapple: +6/+17
Attack: Bite +12 melee (2d6+7)
Full Attack: Bite +12 melee (2d6+7) and 2 claws +10 melee (1d8+4)
Space/Reach: 10 ft./5 ft.
Special Attacks: Pounce, Rake (1d8+4), Improved Trip
Special Qualities: Low-light vision, scent
Saves: Fort +10, Ref +9, Will +5
Abilities: Str 25, Dex 17, Con 18, Int 2, Wis 14, Cha 6
Skills: Hide +6, Listen +7, Move Silently +7, Spot +7
Feats: Multiattack, Improved Initiative, Weapon Focus (bite), Track
Environment: Warm forests, plains, or canyons
Organization: Solitary, pair, or hunting pack (3–6)
Challenge Rating: 6
Treasure: None
Alignment: Always neutral
Advancement: 10–13 HD (Large); 14–20 HD (Huge)
Level Adjustment: —
Description
The Sinraptor is a sleek, agile predator approximately 25 feet long, with a narrow snout filled with recurved teeth and powerful hind limbs built for pursuit. Unlike bulkier carnivorous dinosaurs, Sinraptors hunt with stealth and speed, ambushing prey with calculated precision. Their mottled coloration provides natural camouflage in their environments, whether forest, grassland, or canyon.
Combat
They are ambush predators that rely on quick strikes and mobility. They charge from concealment, using their speed and pounce ability to deliver devastating full attacks. Once their prey is on the ground, they use raking claws to tear through vulnerable tissue.
Though capable of working in loosely organized packs, a solitary Sinraptor remains a formidable threat, using the terrain to its advantage to isolate and incapacitate targets.
Special Attacks
Pounce (Ex):
If a Sinraptor charges a foe, it can make a full attack, including two rake attacks, at the end of the charge.
Rake (Ex):
When grappling or pouncing, the Sinraptor can make two rake attacks with its hind claws at +10 (1d8+4 damage each).
Improved Trip (Ex):
If the Sinraptor hits with a claw attack, it can attempt to trip the opponent as a free action without provoking an attack of opportunity. If the attempt fails, the target cannot react to trip the Sinraptor.
Tactics
Before Combat:
It prefers to ambush prey using cover and terrain. It typically waits near water sources or in game trails, striking when potential victims are distracted or separated.
During Combat:
It opens combat with a charge to trigger its pounce ability. It then uses its claws to trip foes and rake them while prone. If severely wounded or outnumbered, it uses its speed to disengage and retreat into dense terrain.
Morale:
Sinraptors are confident but not reckless. A lone individual flees at 25% hit points unless defending its nest or young.
Ecology
Environment:
They inhabit warm, semi-forested environments where they can hunt with a mix of stealth and speed. Though most active at dawn and dusk, they are not truly nocturnal.
Diet:
Carnivorous. They hunt deer, cattle, horses, and humanoids, and will scavenge if necessary.
Behavior:
Sinraptors are territorial and alert. While not intelligent, they exhibit complex behavior—feints, flanking, and patience—indicating advanced predatory instincts. They may cooperate loosely in family groups or temporary hunting units.
Lore
Knowledge (Nature)
- DC 15: This creature is a Sinraptor, a fast and cunning predator. It is related to the larger allosaurs but built for ambush and endurance hunting.
- DC 20: Sinraptors can knock prey prone and tear them apart with raking hind claws. They are known to work in loose groups to isolate targets.
- DC 25: The Sinraptor is both agile and resilient. Its combination of speed, stealth, and ferocity makes it a feared apex predator in its native range.