Using a case study, this article takes up the issue of the decline of pasto
ralism in Kenya's arable farming zones. It argues that this process should
not be taken as selfevident, with a decline in stockholding seen as consequ
ent simply upon the relative rewards of agriculture, population increase an
d environmental depletion. On the contrary, such a view ignores the fact th
at cattle were the first sector of the traditional agro-pastoralist societi
es of Kenya to become commercialised and, in the process, criminalised. His
torically, cattle-raiding heroes soon became feared stock thieves, and it i
s this process which is essential to understanding the eventual decline of
the: pastoral sector and also to emerging patterns of inequality. The argum
ent is based upon a longitudinal study of Kuria District in south-west Keny
a, with survey data collected from the same homesteads in 1985 and 1995. Bo
th surveys were designed to assess the effects of tobacco growing on emergi
ng patterns of socio-economic stratification. Such a methodology is rare an
d challenges the interpretations that might be reached solely on the basis
of cross-sectional survey data. Despite increasing differentiation of incom
es over the ten-year period, there has been no straightforward consolidatio
n of relative wealth and poverty. Rather, there are indications of signific
ant equalising tendencies at work in the local economy. Over the ten years
there had been a 50 per cent decrease in cattle ownership. Understanding th
e dynamics of this situation takes the argument in other directions and tow
ards understanding the effects of commodification on the military wing of t
he pastoral economy. Agricultural intensification in Kuria has been accompa
nied by an upsurge in cattle raiding and it is this factor more than any ot
her which has led to the decline of stock, as people divest themselves of c
attle to forestall the depredations of raiders. At the same time, attitudes
to the raiders themselves have hardened and evidence suggests that it is r
aiding families-rather than, say, the poor as such-who find it expedient to
migrate and in the process sell their land, allowing some consolidation of
land holdings by other members of the community.