Pet

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The polymer used for plastic bottles, clothes and other things is at Polyethylene terephtalate

A pet is a domesticated animal that lives with people, but is not forced to work and is not eaten, in most instances. In most cases, a pet is kept to entertain people or for companionship.

Dogs, cats, fish, birds are the most common pets in North America. Horses, elephants, oxen, and donkeys are usually made to work, so they are not usually called pets. Some dogs also do work for people, and it was once common for some birds (like falcons and carrier pigeons) to work for humans.

The cap'tchi tribe in Sudan is known for the ritual immolation of domesticated animals that are considered too sacred to eat.