Demiurge, if you're happy with it, bring on Camptosaurus.
Can do!
Camptosaurus
Large Animal
Hit Dice: 3d8+9 (22 hp)
Initiative: +2
Speed: 50ft (8 squares)
Armor Class: 15 (-1 size, +2 Dex, +4 natural), touch 11, flat-footed 13
Base Attack/Grapple: +2/+9
Attack: Thumb-spike +5 melee (1d3+3)
Full Attack: 2 thumb-spikes +5 melee (1d3+3)
Space/Reach: 10ft/5ft
Special Attacks: Stampede
Special Qualities: Keen scent, low-light vision
Saves: Fort +6, Ref +5, Will +0
Abilities: Str 17, Dex 15, Con 17, Int 1, Wis 9, Cha 4
Skills: Listen +4, Spot +4
Feats: Alertness, Run
Environment: Warm and temperate forests and hills
Organization: Pair or herd (6-36)
Challenge Rating: 2
Treasure: None
Alignment: Always neutral
Advancement: 4-9 HD (Large)
Level Adjustment: -
This thin bipedal creature has a long tail, and S-shaped neck attached to a long head with a beak, and small spikes on its thumbs.
Camptosaurs are particularly stupid and skittish herbivorous dinosaurs.
A camptosaurus is usually around 20 feet long, with about a third of that being tail. They are brightly colored, with stripes and wattles being used by the males to attract mates. This, combined with their dull minds, might have led them to extinction if not for two things- they are quite fast, and their sense of smell is incredibly acute. They have been known to live in herds amongst brachiosaurs or camarasaurs: the sauropod’s long necks and keen eyes and the camptosaur’s sensitive noses compliment one another and keep the herds aware of most dangers.
Combat
Camptosaurs always flee from combat, but they will use their thumb-spikes if cornered or knocked down.
Keen Scent (Ex): A camptosaurus can detect creature through scent up to 60 feet away.
Stampede (Ex): A frightened herd of camptosaurs flees as a group from a perceived danger, literally running over creatures in their path. Large or smaller creatures caught in a camptosaur stampede take 1d12 points of damage for every five camptosaurs in the herd (Reflex DC 14 halves). The save DC is Strength based.