Humans have shared food with animals for centuries. Why is that?

Shawnee Barham prepares to feed horses at her farm in Rice, Texas, on March 17, 2021.
Shawnee Barham prepares to feed horses at her farm in Rice, Texas, on March 17, 2021.PHOTO: NYTIMES

(NYTIMES) In England and America, selling bird seed for feeders is a big business. In Delhi, people toss bits of meat into the air for black kites. Fleets of ships ply the oceans to catch fish for domestic cats, the descendants of predatory land animals.

Humans feed animals all the time, whether it's our pets, the chickens we plan to eat or the ducks at the park pond, even though we shouldn't.

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