If it was past life regression there really is no need for interpretation. Its simply you seeing something that already happend. Now a dream on the other hand, i could elaborate a bit on.
If someone had this dream i would venture to guess that they were a bit of a power seeker. The dream may be telling the person subconsciously that their power comes from dark weather, that their power may become more active in violent situations(such as you stating that there were enemies in the dream, and that cats may be of some use to them. Most likely through spiritual guidance through a familiar.