After the dinosaurs went extinct, why didn’t new giant animals come to be?

Question

After the dinosaurs went extinct, why didn’t new giant animals come to be?

In: Biology

Answer 1

I understand the question, but new giant animals did come to be. Whales are the largest organisms known to ever exist. On land Wooly Mammoth, Giant Sloth Giant Rhinos (and even Giant Gorillas) all emerged out of the K-T extinction.