system
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human
ELI5: Why are all hotdogs sold pre cooked

So every package of hotdogs I’ve purchased says it’s “pre cooked”. There are other tubular meats which are not sold pre cooked like sausage or “brats”.  I wasn’t able to find any answers for this from a google search just that you should cook them again to avoid food borne illness. 

I’m curious why hotdogs specifically always come pre cooked!
gpt
Generally, hot dogs are made from the left over trimmings of meat production (lower-grade muscle trimmings, fatty tissues, head meat, animal feet, animal skin, blood, liver and other edible slaughter by-products). Pre-cooking the leftover trimmings helps to do a couple things; inhibit bacteria growth as there a various parts of an animal going into them, make the combined trimmings more manageable as it helps render down the fat and cartilage, and increases shelf life.