eli5 Why do pigs have that strange tail, why it is not straight?
In: Biology
Most wild pigs and some breeds of domesticated pigs have naturally straight tails, but a lot of domesticated pig breeds are descended from wild pigs from China that have naturally curly tails. When a curly-tailed pig’s tail goes straight it means that the animal is stressed or unhealthy, but some breeds of pig will just always have a straight tail.
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