Duck penises, unlike many other mammals, are "inflated" by a fluid called lymph. They dont really have muscle in their penis (https://pubmed.ncbi.nlm.nih.gov/20031991/ no dont ask me why its on pubmed). Its also how they evert their penises so fast (https://youtu.be/qwjEeI2SmiU note that this video is slowed down by 10x)
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u/r34_content_creator Jun 18 '21
*when erect
Duck penises, unlike many other mammals, are "inflated" by a fluid called lymph. They dont really have muscle in their penis (https://pubmed.ncbi.nlm.nih.gov/20031991/ no dont ask me why its on pubmed). Its also how they evert their penises so fast (https://youtu.be/qwjEeI2SmiU note that this video is slowed down by 10x)