  ${\rm CaRuO_3}$ is a paramagnetic metal and since its low temperature
resistivity is described by $\rho=\rho_0+AT^\gamma $ with $\gamma \sim 1.5$, it
is also considered a non-Fermi liquid (NFL) metal. We have performed extensive
magnetoresistance and Hall effect measurements of untwinned epitaxial films of
${\rm CaRuO_3}$. These measurements reveal that ${\rm CaRuO_3}$ exhibits
uniaxial magnetocrystalline anisotropy. In addition, the low-temperature NFL
behavior is most effectively suppressed when a magnetic field is applied along
the easy axis, suggesting that critical spin fluctuations, possibly due to
proximity of a quantum critical phase transition, are related to the NFL
behavior.
