Editing Animal Semen FAQ (section)

==Bears==
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A bear penis has a bone in it. When the penis is soft, the bone is pulled into the body and the penis pulls up close to the body, and visible as a stub with the excess skin crumpled up around it. When semi-erect, the bone juts the penis out to full length, the tip round (like the head of a human's penis) due to the shape of the tip of the penis bone. Fully erect, the flesh at the tip engorges and flares out looking similar to the [[flare]] of a [[horse]]'s penis.

Mating normally takes 10 - 20 minutes. In male bears that fellate themselves or other male bears, ejaculation may occur after only 3 or 4 minutes of stimulation.

Their semen is milky not unlike a human's in appearance.

The color (pink or black) of the penises of polar bears has been widely debated, and there are only a limited number of low resolution pictures of their penises available on the internet. I believe the outcome has been reported that their penises are pink like other bears.