After the flood God said the fear/dread of man would be upon all creatures on earth. birds, insects, animals , fishes. this was needed because, seemingly , for the first time man would be intimate with biology and so in danger. thus man had this innate protection. YET how does this work? Is it in the thoughts of creatures?
i suggest its simply the creatures see mankind as super confident and so presume we are dangerous. no special mechanism otherwise is needed. THEN this carries over to creatures themselves. once on a origin blog a evolutionist in talking about warning colours of poisonous creatures mentioned, as a side point, they with the special colours were quite bold in walking about. now this evolutionist left it there. yet i twigged on this and soon hypothesized that the claimed “WARNING COLOURS” of creatures, like skunks, bees, ladybugs, hosts of insects/reptiles, that have bright colours and are poisonous( with others mimicking them) are not warning colours that have been memorized by creatures but simply are LOUD colours that demand attention to the BOLDNESS of the creature walking about. poison creatures with these bright colours do not hide or camouflage but instead desire to be seen. their protection is being seen. Yet its not the colours equals poison that warns off other creatures but simply their boldness that warns them off. the other creatures presume they are dangerous by their boldness and the colours bring attention and shout it out loud and clear. This makes sense because otherwise, especially in rich tropical areas, it would require too much memory work to know which coloured critters are poison and which are not. I remember somewhere where experiments of creatures denied parents showed they instantly knew coloured creatures were dangerous.
Anyways a mystery of nature can be better explained by reference to genesis and a simple common reductionist equation most shown by how creatures fear mankind.