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Well: 1500lbs bear eats 10000 calories a day, apatosaurus weigh on average 100000lbs or 45 tons. approx. 600000 calories a day! They had to eat all day long to support their weight!

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11y ago
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8y ago

It is unknown, but probably a lot of meat.

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Q: How much did an apatosaurus eat per day?
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