Did you hear about the huge guinea pig fossil? They reckon that bad boy was about 2,000 pounds (907 kg). I'd like to say, "Bacon!", but the guinea pig is a rodent, not a pig. And they're not from Guinea. Darwinists have a thing they call "Cope's Rule", which is supposed to mean that things evolve to be larger (but this idea falls apart when the bad logic is exposed.) There are many large things in the fossil record, and creationists have speculations as to why they were bigger then, but critters just don't grow that big anymore. I suppose evolutionists will invoke "evolutionary stasis" or something.

The fossil record shows that many things grew much larger in the distant past. Why don't we see things that big today? Creationists have some ideas about this.

Back to Ultra Rodent and His Stupendous Friends. Things were larger back then, even though Cope's erroneous "rule" is not exactly seen in action. What happened to the big guys?
As if living creatures don’t display enough variety in God’s creation, fossil forms bring that diversity to a whole new level. Consider the fossil skull of a guinea pig from Uruguay so big the living rodent might have weighed 2,000 pounds! Size estimates vary, but any rodent even close to a buffalo’s bulk attracts attention. Surprisingly, its largest modern relatives only reach about knee high, and the common guinea pig pets are no bigger than a rabbit. Why don’t we see buffalo-sized guinea pigs today? Examining the history of five other humongous or fearsome creatures may help answer this question.
It's not a big task to finish reading, just click on "One-Ton Guinea Pig".