  We realize a two-component dipolar Fermi gas with tunable interactions, using
erbium atoms. Employing a lattice-protection technique, we selectively prepare
deeply degenerate mixtures of the two lowest spin states and perform
high-resolution Feshbach spectroscopy in an optical dipole trap. We identify a
comparatively broad Feshbach resonance and map the interspin scattering length
in its vicinity. The Fermi mixture shows a remarkable collisional stability in
the strongly interacting regime, providing a first step towards studies of
superfluid pairing, crossing from Cooper pairs to bound molecules, in presence
of dipole-dipole interactions.
