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EATING DEAD THINGS
With a handful of highly specialised exceptions, probably all known
carnivorous animals will eat carrion. The two most frequented cited
examples of animals that never touch carrion are (1) cheetahs and (2)
snakes. In general, I suppose it is true that both don't, as a rule,
eat carrion - - however, rules are few and far between in biology. I
understand that cheetahs have on occasion been reported eating stuff
they hadn't killed themselves (carrion by definition), though I
haven't seen any references stating such.
As for snakes, the notion that they don't eat carrion is probably due
to lack of field observation, as in recent years a large number of
snakes eating all manner of dead things have been reported. Chris
Mattison's _Encyclopedia of Snakes_ (if you only ever buy one book on
snakes, make it this one) summarises all the recent literature on
this area: cited cases include a snake swallowing a small mammal that
was long dead and positively crawling with maggots (which reminds one
of African tribal tales about the 'Crowing cobra' killing prey and
then feeding on the maggots.. whatever:)) and a Bull snake that
literally peeled a road-killed toad from the tarmac before swallowing
Of course, it will probably always be true that egg-eating snakes
(dasypeltins) will not eat stale eggs. Carl Gans provides an amazing
and invaluable review of egg eating (oviphory??) in _Biomechanics_.
Incidentally, _Dasypeltis_ does not swallow the embryo if there is
one in the egg: it ejects it with the eggshell.
"Hate to see you go, love to watch you leave"