No. It's not necessary.
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No because it is not specific it wouldn't be capitalized because you can say. I ate a cat. What type of specific cat? The name of the cat should be capitalized!
they ate the same food every day
colonial people ate food like corn and deer,bear,turkky wild game like that
They ate fish, meat, crops, and most likely chicken and eggs
they made candles and ate and slept.