This material is Open Game Content, and is licensed for public use under the terms of the Open Game License v1.0a.
| Giant Ant, Worker | Giant Ant, Soldier | Giant Ant, Queen |
| Type | Medium-Size Vermin | Medium-Size Vermin | Large Vermin |
| HD | 2d8 (9 hp) | 2d8+2 (11 hp) | 4d8+4 (22 hp) |
| Initiative | +0 | +0 | -1 (Dex) |
| Speed | 50 ft., climb 20 ft. | 50 ft., climb 20 ft. | 40 ft. |
| AC | 17 (+7 natural) | 17 (+7 natural) | 17 (-1 size, -1 Dex, +9 natural) |
| Attacks | Bite +1 melee | Bite +3 melee | Bite +5 melee |
| Damage | Bite 1d6 | Bite 2d4+3 | Bite 2d6+4 |
| Face/Reach | 5 ft. by 5 ft./5 ft. | 5 ft. by 5 ft./5 ft. | 5 ft. by 10 ft./5 ft. |
| Special Attacks | Improved grab | Improved grab, acid sting | Improved grab |
| Special Qualities | Vermin | Vermin | Vermin |
| Saves | Fort +3, Ref +0, Will +0 | Fort +4, Ref +0, Will +1 | Fort +5, Ref +0, Will +2 |
| Abilities | Str 10, Dex 10, Con 10, Int -, Wis 11, Cha 9 | Str 14, Dex 10, Con 13, Int -, Wis 13, Cha 11 | Str 16, Dex 9, Con 13, Int -, Wis 13, Cha 11 |
| Skills | Climb +8, Listen +5, Spot +5 | Climb +10, Listen +6, Spot +6 | Listen +7, Spot +7 |
| Climate/Terrain | Temperate and warm desert, forest, hill, plains, and underground | Temperate and warm desert, forest, hill, plains, and underground | Temperate and warm desert, forest, hill, plains, and underground |
| Organization | Gang (2-6) or crew (6-11 plus 1 giant ant soldier) | Solitary or gang (2-4) | Hive (1 plus 10-100 workers and 5-20 soldiers) |
| Challenge Rating | 1 | 2 | 2 |
| Treasure | None | None | 1/10 coins; 50% goods; 50% items |
| Alignment | Always neutral | Always neutral | Always neutral |
| Advancement | 3-4 HD (Medium-size);5-6 HD (Large) | 3-4 HD (Medium-size); 5-6 HD (Large) | 5-6 HD (Large); 7-8 HD (Huge) |
| Giant Bee | Giant Beetle, Bombardier | Giant Beetle, Fire |
| Type | Medium-Size Vermin | Medium-Size Vermin | Small Vermin |
| HD | 3d8 (13 hp) | 2d8+4 (13 hp) | 1d8 (4 hp) |
| Initiative | +2 (Dex) | +0 | +0 |
| Speed | 20 ft., fly 80 ft. (good) | 30 ft. | 30 ft. |
| AC | 14 (+2 Dex, +2 natural) | 16 (+6 natural) | 16 (+1 size, +5 natural) |
| Attacks | Sting +2 melee | Bite +2 melee | Bite +1 melee |
| Damage | Sting 1d4 and poison | Bite 1d4+1 | Bite 2d4 |
| Face/Reach | 5 ft. by 5 ft./5 ft. | 5 ft. by 5 ft./5 ft. | 5 ft. by 5 ft./5 ft. |
| Special Attacks | Poison | Acid spray | - |
| Special Qualities | Vermin | Vermin | Vermin |
| Saves | Fort +3, Ref +3, Will +2 | Fort +5, Ref +0, Will +0 | Fort +2, Ref +0, Will +0 |
| Abilities | Str 11, Dex 14, Con 11, Int -, Wis 12, Cha 9 | Str 13, Dex 10, Con 14, Int -, Wis 10, Cha 9 | Str 10, Dex 11, Con 11, Int -, Wis 10, Cha 7 |
| Skills | Intuit Direction +6, Spot +6 | Listen +5, Spot +5 | Climb +4, Listen +3, Spot +3 |
| Climate/Terrain | Temperate and warm land and underground | Temperate and warm land and underground | Temperate and warm land and underground |
| Organization | Solitary, swarm (2-5), or hive (11-20) | Cluster (2-5) or swarm (6-11) | Cluster (2-5) or swarm (6-11) |
| Challenge Rating | 1/2 | 2 | 1/3 |
| Treasure | No coins; 1/4 goods (honey only); no items | None | None |
| Alignment | Always neutral | Always neutral | Always neutral |
| Advancement | 4-6 HD (Medium-size); 7-9 HD (Large) | 3-4 HD (Medium-size); 5-6 HD (Large) | 2-3 HD (Small) |
| Giant Beetle, Stag | Giant Praying Mantis | Giant Wasp |
| Type | Large Vermin | Large Vermin | Large Vermin |
| HD | 7d8+21 (52 hp) | 4d8+8 (26 hp) | 5d8+10 (32 hp) |
| Initiative | +0 | -1 (Dex) | +1 (Dex) |
| Speed | 20 ft. | 20 ft., fly 40 ft. (poor) | 20 ft., fly 60 ft. (good) |
| AC | 19 (-1 size, +10 natural) | 14 (-1 size, -1 Dex, +6 natural) | 14 (-1 size, +1 Dex, +4 natural) |
| Attacks | Bite +10 melee | Claws +6 melee, bite +1 melee | Sting +6 melee |
| Damage | Bite 4d6+9 | Claws 1d8+4, bite 1d6+2 | Sting 1d3+6 and poison |
| Face/Reach | 5 ft. by 10 ft./5 ft. | 5 ft. by 10 ft./5 ft. | 5 ft. by 10 ft./5 ft. |
| Special Attacks | Trample 2d8+3 | Improved grab, squeeze | Poison |
| Special Qualities | Vermin | Vermin | Vermin |
| Saves | Fort +8, Ref +2, Will +2 | Fort +6, Ref +0, Will +3 | Fort +6, Ref +2, Will +2 |
| Abilities | Str 23, Dex 10, Con 17, Int -, Wis 10, Cha 9 | Str 19, Dex 8, Con 15, Int -, Wis 14, Cha 11 | Str 18, Dex 12, Con 14, Int -, Wis 13, Cha 11 |
| Skills | Listen +8, Spot +7 | Hide +1*, Listen +5, Spot +8 | Intuit Direction +7, Spot +9 |
| Climate/Terrain | Temperate and warm forest and underground | Any land and underground | Temperate and warm land and underground |
| Organization | Cluster (2-5) or swarm (6-11) | Solitary | Solitary, swarm (2-5), or nest (11-20) |
| Challenge Rating | 4 | 2 | 3 |
| Treasure | None | None | None |
| Alignment | Always neutral | Always neutral | Always neutral |
| Advancement | 8-10 HD (Large); 11-21 HD (Huge) | 5-8 HD (Large); 9-12 HD (Huge) | 6-8 HD (Large); 9-15 HD (Huge) |
| Monstrous Centipede, Tiny | Monstrous Centipede, Small | Monstrous Centipede, | Monstrous Centipede, Large | Monstrous Centipede, Huge | Monstrous Centipede, Gargantuan |
| Type | Medium-Size Tiny Vermin | Small Vermin | Medium-Size Vermin | Large Vermin | Huge Vermin | Gargantuan Vermin |
| Hit Dice | 1/4 d8 (1 hp) | 1/2 d8 (2 hp) | 1d8 (4 hp) | 2d8 (9 hp) | 4d8 (18 hp) | 16d8 (72 hp) |
| Initiative | +2 (Dex) | +2 (Dex) | +2 (Dex) | +2 (Dex) | +2 (Dex) | +2 (Dex) |
| Speed | 20 ft. | 30 ft. | 40 ft. | 40 ft. | 40 ft. | 40 ft. |
| AC | 14 (+2 size, +2 Dex) | 14 (+1 size, +2 Dex, +1 natural) | 14 (+2 Dex, +2 natural) | 14 (-1 size, +2 Dex, +3 natural) | 16 (-2 size, +2 Dex, +6 natural) | 18 (-4 size, +2 Dex, +10 natural) |
| Attacks | Bite +4 melee | Bite +3 melee | Bite +2 melee | Bite +2 melee | Bite +4 melee | Bite +13 melee |
| Damage | Bite 1d3-5 and poison | Bite 1d4-3 and poison | Bite 1d6-1 and poison | Bite 1d8+1 and poison | Bite 2d6+4 and poison | Bite 2d8+7 and poison |
| Face/Reach | 2 1/2 ft. by 2 1/2 ft./0 ft. | 5 ft. by 5 ft./5 ft. | 5 ft. by 5 ft./5 ft. | 5 ft. by 15 ft./5 ft. | 10 ft. by 30 ft./10 ft. | 15 ft. by 60 ft./10 ft. |
| Special Attacks | Poison | Poison | Poison | Poison | Poison | Poison |
| Special Qualities | Vermin | Vermin | Vermin | Vermin | Vermin | Vermin |
| Saves | Fort +2, Ref +2, Will +0 | Fort +2, Ref +2, Will +0 | Fort +2, Ref +2, Will +0 | Fort +3, Ref +2, Will +0 | Fort +4, Ref +3, Will +1 | Fort +10, Ref +7, Will +5 |
| Abilities | Str 1, Dex 15, Con 10, Int -, Wis 10, Cha 2 | Str 5, Dex 15, Con 10, Int -, Wis 10, Cha 2 | Str 9, Dex 15, Con 10, Int -, Wis 10, Cha 2 | Str 13, Dex 15, Con 10, Int -, Wis 10, Cha 2 | Str 17, Dex 15, Con 10, Int -, Wis 10, Cha 2 | Str 21, Dex 15, Con 10, Int -, Wis 10, Cha 2 |
| Skills | Climb +3, Hide +17, Spot +7 | Climb +5, Hide +13, Spot +7 | Climb +8, Hide +8, Spot +8 | Climb +10, Hide +3,Spot +8 | Climb +11, Hide +1, Spot +7 | Climb +13, Hide -3, Spot +7 |
| Feats | Weapon Finesse (bite) | Weapon Finesse (bite) | Weapon Finesse (bite) | Weapon Finesse (bite) | - | - |
| Climate/Terrain | Temperate and warm land and underground | Temperate and warm land and underground | Temperate and warm land and underground | Temperate and warm land and underground | Temperate and warm land and underground | Temperate and warm land and underground |
| Organization | Colony (8-16) | Colony (2-5) or swarm (6-11) | Solitary or colony (2-5) | Solitary or colony (2-5) | Solitary or colony (2-5) | Solitary |
| Challenge Rating | 1/8 | 1/4 | 1/2 | 1 | 2 | 6 |
| Treasure | None | None | None | None | None | None |
| Alignment | Always neutral | Always neutral | Always neutral | Always neutral | Always neutral | Always neutral |
| Advancement | - | - | - | 3 HD (Large) | 5-15 HD (Huge) | 17-31 HD (Gargantuan) |
| Monstrous Centipede, Colossal | Monstrous Scorpion, Tiny | Monstrous Scorpion, Small |
| Type | Colossal Vermin | Tiny Vermin | Small Vermin |
| Hit Dice | 32d8 (144 hp) | 1/2 d8+2 (4 hp) | 1d8+2 (6 hp) |
| Initiative | +2 (Dex) | +0 | +0 |
| Speed | 40 ft. | 20 ft. | 30 ft. |
| AC | 20 (-8 size, +2 Dex, +16 natural) | 14 (+2 size, +2 natural) | 14 (+1 size, +3 natural) |
| Attacks | Bite +23 melee | 2 claws +2 melee, sting -3 melee | 2 claws +1 melee, sting -4 melee |
| Damage | Bite 4d6+10 and poison | Claw 1d2-4, sting 1d2-4 and poison | Claw 1d3-1, sting 1d3-1 and poison |
| Face/Reach | 30 ft. by 120 ft./15 ft. | 2 1/2 ft. by 2 1/2 ft./0 ft. | 5 ft. by 5 ft./5 ft. |
| Special Attacks | Poison | Improved grab, poison | Improved grab, squeeze, poison |
| Special Qualities | Vermin | Vermin | Vermin |
| Saves | Fort +18, Ref +12, Will +10 Fort +4, Ref +0, Will +0 | Fort +4, Ref +0, Will +0 |
| Abilities | Str 25, Dex 15, Con 10, Int -, Wis 10, Cha 2 | Str 3, Dex 10, Con 14, Int -, Wis 10, Cha 2 | Str 9, Dex 10, Con 14, Int -, Wis 10, Cha 2 |
| Skills | Climb +15, Hide -7, Spot +7 | Climb +4, Hide +15, Spot +7 | Climb +6, Hide +12, Spot +7 |
| Feats | - | Weapon Finesse (claw, sting) | Weapon Finesse (claw, sting) |
| Climate/Terrain | Temperate and warm land and underground | Temperate and warm land and underground | Temperate and warm land and underground |
| Organization | Solitary | Colony (8-16) | Colony (2-5) or swarm (6-11) |
| Challenge Rating | 8 | 1/4 | 1/2 |
| Treasure | None | None | None |
| Alignment | Always neutral | Always neutral | Always neutral |
| Advancement | 33-64 HD (Colossal) | - | - |
| Monstrous Scorpion, Medium-Size | Monstrous Scorpion, Large | Monstrous Scorpion, Huge | Monstrous Scorpion, Gargantuan | Monstrous Scorpion, Colossal | Monstrous Spider, Tiny |
| Type | Medium-Size Vermin | Large Vermin | Huge Vermin | Gargantuan Vermin | Colossal Vermin | Tiny Vermin |
| Hit Dice | 2d8+4 (13 hp) | 4d8+8 (26 hp) | 16d8+32 (104 hp) | 32d8+64 (208 hp) | 64d8+128 (416 hp) | 1/2 d8 (2 hp) |
| Initiative | +0 | +0 | +0 | +0 | +0 | +3 (Dex) |
| Speed | 40 ft. | 50 ft. | 50 ft. | 50 ft. | 50 ft. | 20 ft., climb 10 ft. |
| AC | 14 (+4 natural) | 14 (-1 size, +5 natural) | 16 (-2 size, +8 natural) | 18 (-4 size, +12 natural) | 20 (-8 size, +18 natural) | 15 (+2 size, +3 Dex) |
| Attacks | 2 claws +2 melee, sting -3 melee | 2 claws +5 melee, sting +0 melee | 2 claws +15 melee, sting +10 melee | 2 claws +27 melee, sting +22 melee | 2 claws +49 melee, sting +44 melee | Bite +5 melee |
| Damage | Claw 1d4+1, sting 1d4 and poison | Claw 1d6+3, sting 1d6+1 and poison | Claw 1d8+5, sting 2d4+2 and poison | Claw 2d6+7, sting 2d6+3 and poison | Claw 2d8+9, sting 2d8+4 and poison | Bite 1d3-4 and poison |
| Face/Reach | 5 ft. by 5 ft./5 ft. | 5 ft. by 10 ft./5 ft. | 10 ft. by 20 ft./10 ft. | 20 ft. by 40 ft./10 ft. | 40 ft. by 80 ft./15 ft. | 2 1/2 ft. by 2 1/2 ft./0 ft. |
| Special Attacks | Improved grab, squeeze, poison | Improved grab, squeeze, poison | Improved grab, squeeze, poison | Improved grab, squeeze, poison | Improved grab, squeeze, poison | Poison, web |
| Special Qualities | Vermin | Vermin | Vermin | Vermin | Vermin | Vermin |
| Saves | Fort +5, Ref +0, Will +0 | Fort +6, Ref +1, Will +1 | Fort +12, Ref +5, Will +5 | Fort +20, Ref +10, Will +10 | Fort +36, Ref +21, Will +21 | Fort +2, Ref +3, Will +0 |
| Abilities | Str 13, Dex 10, Con 14, Int -, Wis 10, Cha 2 | Str 17, Dex 10, Con 14, Int -, Wis 10, Cha 2 | Str 21, Dex 10, Con 14, Int -, Wis 10, Cha 2 | Str 25, Dex 10, Con 14, Int -, Wis 10, Cha 2 | Str 29, Dex 10, Con 14, Int -, Wis 10, Cha 2 | Str 3, Dex 17, Con 10, Int -, Wis 10, Cha 2 |
| Skills | Climb +8, Hide +8, Spot +7 | Climb +11, Hide +3, Spot +7 | Climb +12, Hide +0, Spot +7 | Climb +14, Hide -4, Spot +7 | Climb +16, Hide -8, Spot +7 | Climb +8, Hide +18, Jump -4*, Spot +7* |
| Climate/Terrain | Temperate and warm land and underground | Temperate and warm land and underground | Temperate and warm land and underground | Temperate and warm land and underground | Temperate and warm land and underground | Temperate and warm land and underground |
| Organization | Solitary or colony (2-5) | Solitary or colony (2-5) | Solitary or colony (2-5) | Solitary | Solitary | Colony (8-16) |
| Challenge Rating | 1 | 2 | 6 | 9 | 11 | 1/4 |
| Treasure | 1/10 coins; 50% goods; 50% items | 1/10 coins; 50% goods; 50% items | 1/10 coins; 50% goods; 50% items | 1/10 coins; 50% goods; 50% items | 1/10 coins; 50% goods; 50% items | None |
| Alignment | Always neutral | Always neutral | Always neutral | Always neutral | Always neutral | Always neutral |
| Advancement | - | 5-15 HD (Large) | 17-31 HD (Huge) | 33-63 HD (Gargantuan) | - | - |
| Feats | | | | - | - | Weapon Finesse (bite) |
| Monstrous Spider, Small | Monstrous Spider, Medium-Size | Monstrous Spider, Large | Monstrous Spider, Huge | Monstrous Spider, Gargantuan | Monstrous Spider, Colossal |
| Type | Small Vermin | Medium-Size Vermin | Large Vermin | Huge Vermin | Gargantuan Vermin | Colossal Vermin |
| Hit Dice | 1d8 (4 hp) | 2d8+2 (11 hp) | 4d8+4 (22 hp) | 10d8+10 (55 hp) | 24d8+24 (132 hp) | 48d8+48 (264 hp) |
| Initiative | +3 (Dex) | +3 (Dex) | +3 (Dex) | +3 (Dex) | +3 (Dex) | +3 (Dex) |
| Speed | 30 ft., climb 20 ft. 30 ft., climb 20 ft. (40 ft., climb 20 ft.) | 30 ft., climb 20 ft. (40 ft., climb 20 ft.) | (40 ft., climb 20 ft.) | 30 ft., climb 20 ft. (40 ft., climb 20 ft.) | 30 ft., climb 20 ft. (40 ft., climb 20 ft.) | 30 ft., climb 20 ft. (40 ft., climb 20 ft.) |
| AC | 14 (+1 size, +3 Dex) | 14 (+3 Dex, +1 natural) | 14 (-1 size, +3 Dex, +2 natural) | 16 (-2 size, +3 Dex, +5 natural) | 18 (-4 size, +3 Dex, +9 natural) | 20 (-8 size, +3 Dex, +15 natural) |
| Attacks | Bite +4 melee | Bite +4 melee | Bite +4 melee | Bite +9 melee | Bite +20 melee | Bite +36 melee |
| Damage | Bite 1d4-2 and poison | Bite 1d6 and poison | Bite 1d8+3 and poison | Bite 2d6+6 and poison | Bite 2d8+9 and poison | Bite 4d6+12 and poison |
| Face/Reach | 5 ft. by 5 ft./5 ft. | 5 ft. by 5 ft./5 ft. | 10 ft. by 10 ft./5 ft. | 15 ft. by 15 ft./10 ft. | 20 ft. by 20 ft./10 ft. | 40 ft. by 40 ft./15 ft. |
| Special Attacks | Poison, web | Poison, web | Poison, web | Poison, web | Poison, web | Poison, web |
| Special Qualities | Vermin | Vermin | Vermin | Vermin | Vermin | Vermin |
| Saves | Fort +2, Ref +3, Will +0 | Fort +4, Ref +3, Will +0 | Fort +5, Ref +4, Will +1 | Fort +8, Ref +6, Will +3 | Fort +15, Ref +11, Will +8 | Fort +27, Ref +19, Will +16 |
| Abilities | Str 7, Dex 17, Con 10, Int -, Wis 10, Cha 2 | Str 11, Dex 17, Con 12, Int -, Wis 10, Cha 2 | Str 15, Dex 17, Con 12, Int -, Wis 10, Cha 2 | Str 19, Dex 17, Con 12, Int -, Wis 10, Cha 2 | Str 23, Dex 17, Con 12, Int -, Wis 10, Cha 2 | Str 27, Dex 17, Con 12, Int -, Wis 10, Cha 2 |
| Skills | Climb +10, Hide +14, Jump -2*, Spot +7* | Climb +12, Hide +10, Jump +0*, Spot +7* | Climb +14, Hide +6, Jump +2*, Spot +7* | Climb +16, Hide +2, Jump +4*, Spot +7* | Climb +18, Hide -2, Jump +6*, Spot +7* | Climb +20, Hide -6, Jump +8*, Spot +7* |
| Feats | Weapon Finesse (bite) | Weapon Finesse (bite) | - |
| Climate/Terrain | Temperate and warm land and underground | Temperate and warm land and underground | Temperate and warm land and underground | Temperate and warm land and underground | Temperate and warm land and underground | Temperate and warm land and underground |
| Organization | Colony (2-5) or swarm (6-11) | Solitary or colony (2-5) | Solitary or colony (2-5) | Solitary or colony (2-5) | Solitary | Solitary |
| Challenge Rating | 1/2 | 1 | 2 | 4 | 7 | 10 |
| Treasure | None | 1/10 coins; 50% goods; 50% items | 1/10 coins; 50% goods; 50% items | 1/10 coins; 50% goods; 50% items | 1/10 coins; 50% goods; 50% items | 1/10 coins; 50% goods; 50% items |
| Alignment | Always neutral | Always neutral | Always neutral | Always neutral | Always neutral | Always neutral |
| Advancement | - | 3 HD (Medium-size) | 5-9 HD (Large) | 11-23 HD (Huge) | 25-47 HD (Gargantuan) | 49-64 HD (Colossal) |