Dna is inter-changable with belief. DNA is like a recording media. I know that animals operate with belief systems. Domesticated animals often utilize animal behavioral specialists. Dogs are very emotional and mirror( in their way) their owners emotional tendencies.
Personally i don't think its okay that animals killing other animals is okay. Maybe Doven can comment on this further from a loosh paradigm. I personally think this was coded into nature as part of a suffering model. Then we are trained to just accept what is, when what is sucks and was meant to suck by design by the suc***s. ;-)
If you put a baby in a room and place it with an apple and a rabbit, which one will end up in the baby's mouth eventually?
Even animals learn to hunt by their mother's.