Episode 5 (animal facts)

The heart of the blue whale, the largest animal on earth, is five feet long and weighs 400 pounds. The whale in total weighs 40,000 pounds.

For comparison, an elephant’s heart weighs around 30 pounds. And a human heart? A mere 10 ounces.

Cows don’t actually have four stomachs; they have one stomach with four compartments.

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