Thursday 15th January 2026
    Difficulty: Medium

    Mammalian testicles (#1,154)

    Photo by <a href="https://unsplash.com/@deonblack?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Deon Black</a>
    Photo by Deon Black (Unsplash)

    1. Which of these has the biggest testicles, relative to body weight?

    2. Which mammals have the biggest testicles of all, relative to body weight?

    3. Which weighs more: a blue whale's testicle, or an adult male human's entire body?

    Privacy: we believe in respecting our users' privacy. When you click the button above, you'll get your score straight away. We won't request your details, or try to sell you anything, or ask you to subscribe.

    Top