The bioecology of the wild boar Sus scrofa was studied in the Turkish province of Kırıkkale using field observations and examination of 21 specimens collected from 2001 to 2003. Habitat, some breeding features, and morphometric data were recorded. The wild boar in Kırıkkale occurs mainly in forests, marshy areas and dense scrub. It selects scrub areas near hill tops as daytime resting sites. It feeds on some agricultural products in summer and is often hunted to prevent such damage. It produces its young in April and May. Morphometric data from specimens examined were consistent with the Turkish wild boar belonging to the nominate subspecies Sus scrofa scrofa but its taxonomy does merit further investigation.