As the expression "nature red in tooth and claw" suggests, there is an cruel inevitability to life and death in the animal world.
So quite what a Welsh animal lover was thinking when he tried to rescue a tiny duckling that had just been eaten by a heron is open to question, the Daily Telegraph reports.
More puzzling still is the fact that to save it from its natural fate he cut open the heron and pulled the terrified duckling from its stomach.
The effect was, rather predictably, to kill the heron, although the duckling survived relatively unscathed.
North Wales police arrested the elderly man but released him with a caution.