  The predator/prey (capture) problem is a prototype of many network-related
applications. We study the capture process on complex networks by considering
multiple predators from multiple sources. In our model, some lions start from
multiple sources simultaneously to capture the lamb by biased random walks,
which are controlled with a free parameter $\alpha$. We derive the distribution
of the lamb's lifetime and the expected lifetime $\left\langle T\right\rangle
$. Through simulation, we find that the expected lifetime drops substantially
with the increasing number of lions. We also study how the underlying
topological structure affects the capture process, and obtain that locating on
small-degree nodes is better than large-degree nodes to prolong the lifetime of
the lamb. Moreover, dense or homogeneous network structures are against the
survival of the lamb.
