By DiBgd at English Wikipedia, CC BY 2.5, accessed here
[Proof that evolution has a sense of humor, but the results can still mess you up pretty bad. The cannibalism mentioned is based on the related Majungasaurus]
Carnotaurus This
slender biped stands tall on long, clawed legs, and its arms have atrophied
into little more than nubs. Its short, deep skull is crowned with two small
horns and its jaw is filled with serrated teeth. Its body is covered with
tubercles and scales.
The carnivorous dinosaurs called carnotaurus
combine bone-breaking strength with remarkable speed. They are thin and leggy
creatures built for sprinting. Rather than tackle similarly sized megafauna,
carnotauruses specialize on small game—although to a creature as large as a
carnotaurus, “small” includes creatures of human size. They prefer to strike
with speed, snatching a lone target in their jaws, gulping it down in a single
motion, then retreating from possible retaliation.
Carnotauruses are typically solitary creatures,
but gather in large numbers to display and mate. Although both male and female
carnotauruses have horns and rugose skulls, those of the males are thicker and
are used in ritual shoving matches to establish breeding hierarchies.
Carnotauruses are not above cannibalism, and ritual combat sometimes gives way
to fights to the death if a combatant shows signs of weakness or ill health. A
carnotaurus grows to about 30 feet long and weighs about 3,000 pounds.
Carnotaurus as Animal Companions
Starting
Statistics: Size Medium; Speed 50 ft..; AC +1 natural armor; Attack bite (1d8); Ability Scores Str 15, Dex 21, Con 8, Int 2, Wis 13, Cha 12; Special Qualities low-light vision,
scent, sprint. 4th-Level
Advancement: Size Large; AC +3; Attack bite (2d6); Ability
Scores Str +4, Dex -2, Con +4; Special
Attacks devastating bite, grab, swallow whole (Small)
These rare predators can be either boon or bane to troglodyte settlements. Wild ones will brazenly attack pens of gallimimuses or even lone troglodyte hunters. Some tribes manage to get lucky, however, and find a clutch of eggs; if raised from hatching, they can be trained into formidable war-beasts. Such favored companions are reserved for only the highest-ranking warriors due to their rarity.
Shores of Swords 