I have a theory (unproven of course) that some of the snakes that are selectively bred for genetic mutations, with many of those characteristics, may also carry a vision defect (as in the one-eyed boa myopic defect). They may be seeing their keeper as larger than life and real scary. There could be a magnification or some other visual distortion.

Or they just may have acquired a distantly recessive personality gene that exhibits itself as a hair trigger, extremely defensive and extremely aggressive towards humans.
For example, something found in most wild Blood Pythons, as they are so often hunted for the skin trade. Makes sense that the meanest ones with the hair trigger would be most likely to survive in that environment.

Just my thoughts.

jsc
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"As hard as I've tried, just can't NOT do this"
John Crickmer

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