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How did Ice Age animals go extinct?

It all began around 3 million years ago, when much of the Earth was frozen and turned into vast, barren landscapes. Early Ice Age animals were forced to survive in extreme cold, gradually evolving larger bodies and thicker fur to retain heat.

At first, there seemed to be no clear reason for their disappearance. But as the Earth slowly tilted closer toward the Sun, snow and massive glaciers began to melt. Food became increasingly scarce, and these giant creatures struggled to survive.

Within just 8,000 years, species that could not adapt quickly enough vanished forever, leaving behind only a few survivors—the ones we can still see today.