By the amount of chattering my cats do when asleep, dream hunts, like real life hunts, are often unsuccessful. If you watch closely, you might be able to work out what scenario is being enacted or re-enacted in your cat's dream. Those little movements are all clues to what is going on inside that cute furry head. That twitching tail could mean 'stalking prey', 'poised to pounce' or 'seen something interesting'. Sometimes Aphrodite even licks her lips afterwards, other times she seems to be playing with her catch.
Teeth chattering and tail lashing probably means the dream prey got away.
Other experiences surely feature in feline dreams. I took to gently waking him up. Traumatic incident often stick in our minds and no doubt in feline minds as well. Sappho still has occasional nightmares, waking up whimpering piteously before frantically trying to wake me up. I can only assume she has relived the death of her owner.