Id like to see the evidence of that.
Direct evidence for predation on trilobites in the Cambrian - PubMed
The gut is filled with fragments of the eodiscoid trilobite, Pagetia. The well-developed digestive glands and the fragmentary trilobite remains suggest (i) that the arthropod was a durophagous, possibly selective predator, and (ii) that small trilobites such as eodiscoids were a major food source in Cambrian marine ecosystems.
Physical evidence of predatory behavior in Tyrannosaurus rex
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Here we report definitive evidence of predation by T. rex: a tooth crown embedded in a hadrosaurid caudal centrum, surrounded by healed bone growth. This indicates that the prey escaped and lived for some time after the injury, providing direct evidence of predatory behavior by T. rex."
(PDF) Skin pathology in the Cretaceous: Evidence for probable failed predation in a dinosaur
Examination of preserved skin from a duckbill dinosaur revealed disruption of the normal scale pattern and replacement by granulation tissue. Wrinkles radiating outward from the scar document wound contraction similar to that seen in modern injuries. This is the first unequivocal report of dinosaur tissue response to dermal pathology and evidences behavior – escape from a predator.
YECs know this, this is why they accept the idea that predation occurred before the flood (which is surprising to me because it seems to contradict their idea that God had approved consumption of plants and therefore that is all that animals ate). As a geologist, I would simply conclude that death occurred going back deep in time.
Half eaten trilobites have been observed in the digestive tracks of predators going back to the Cambrian. That's why anomalocaris was considered an Apex predator with it's hard jaws. Reptiles tend to lose a lot of teeth, so it is of no surprise to find some stuck in the bones of prey, lost during fights. Scars on fossil prey have also been observed due to fights.
But if meat was approved once the flood was over, and animals were eating meat before the flood (else how would they be buried?) then there appears to be another theological issue at play. I was watching a video review on ken hams ark encounter when I realized that God's approval of meat was after the flood and not directly after the fall, and I had to do a double take.
So we end up with predators eating meat before the flood, and after the flood. But while on Noah's ark, what did Noah feed the meat eaters? Well, AiG proposes that meat eaters simply survived off of plants despite them having digestive systems today that can't digest plants.
So one has to wonder, if predators could digest plants on the ark, but couldn't digest plants today, could this be an example of hyper-evolution? Well we can't use the "E" word so I guess it would just be rapid baraminological speciation (aka made-up pseudoscientific jargon), speciation thousands of times faster than any form of speciation ever observed in the fossil record. Hand waves* hand waves* stop asking questions!*
I'll let Erika tell the tale: