I collected vast amounts of research on all of these topics (I recommend “A Test Of Pollen Feeding By A Linyphiid Spider” for a truly gripping read) and was about to launch into yet another dissertation.
But enough is enough. All of these articles share the same similarities- AiG badly misconstruing the original research, citing only what they thought would support their views and conveniently ignoring the rest. I can only repeat myself so many times.
So, in conclusion and review:
The adaptations of carnivores cannot be explained away by stating that carnivores somehow miraculously transformed after the Fall as entirely new genetic material was inserted into them. This is an unscientific fairy tale, not anything that can be supported by any amount of research. Nor can today's carnivores easily adapt to a vegetarian diet. The papers that AiG cites (when they are not busy basing their speculations on 50-year-old first-person anecdotes about vegetarian lionesses) invariably come to conclusions far different than those that AiG draws. And those conclusions firmly support evolution as the mechanism for the production of carnivorous adaptations. As carnivores evolved, so did their prey, in an endless dance where one has shaped the other over countless millennia.
As Robinson Jeffers wrote: in “The Bloody Sire”:
What but the wolf's tooth whittled so fine
The fleet limbs of the antelope?
What but fear winged the birds, and hunger
Jewelled with such eyes the great goshawk's head?