Australian brown snakes change their venom as they age, shifting from lizard-targeting neurotoxins to mammal-targeting blood-clotting toxins

Australian brown snakes do not simply get more dangerous as they grow. Research from the University of Queensland shows their venom actually changes composition entirely between infancy and adulthood, shifting from a formula built to kill lizards into one built to take down mammals.

Raccontata datimesofindia.indiatimes.com