For a very quick-and-dirty LA estimate for awakened animals, you could use LA = CR - HD/3 (the awakened animal CR will be approximately one higher than the original animal). That way you'll at least include all the special abilities which count towards CR as well.
For more discussion of awakened animals, please stop by the Awakened Animal thread. Still looking for some more exact LA estimates for various animals as well!
For more discussion of awakened animals, please stop by the Awakened Animal thread. Still looking for some more exact LA estimates for various animals as well!