User blog comment:MilitaryBrat/Katniss Everdeen vs Jurassic Park/@comment-379205-20120605034857

Katniss could take down some of the Compies and Velociraptors, however, she does not have enough arrows and throwing knives (even if she can recover and reuse some her arrows and knives), to bring down them all, and her melee weapons- the combat knife and the throwing knives could also be used as melee weapons (technically could the the arrows in an emergency) are not large enough to keep the Velociraptors at a distance while she fights them.

As for the T-Rexes and the Spinosaurus, in theory, she could bring one down if she put enough arrows into it, or if she got a lucky shot at a vital organ, however, with only twenty arrows, this seems unlikely.

Overall, I'd say she will be able to kill a significant number of the compys and a few raptors, but would not fare well against large dinosaurs.