  We generalize "sensitivity to initial conditions" to foliated spaces and
pseudogroups, offering a definition of Devaney chaos in this setting. In
contrast to the case of group actions, where sensitivity follows from the other
two conditions of Devaney chaos, we show that this is true only for compact
foliated spaces, exhibiting a counterexample in the non-compact case. Finally,
we obtain an analogue of the Auslander-Yorke dichotomy for compact foliated
spaces and compactly generated pseudogroups.
