  We present electrical and thermal transport measurements in single crystals
of the metallic oxide RuO$_2$. The resistivity and Seebeck coefficient measured
up to 970K confirm the metallic nature of transport. Magnetoresistance and Hall
effect measurements as a function of orientation can be most easily described
by a multiband transport model. We find that the ordinary Hall effect dominates
any anomalous Hall signal in single crystals.
