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The Surprisingly Violent Mating Ritual of the Common Toad (4K)
01:22 — Dozens of male common toads jockey for position, as they try to mate with the single female - and they can be pretty rough about it. It's the most unr (more…)
Why the Fountains of Heidleburg Castle Are So Important for Frogs (4K)
02:11 — Aside from being a national treasure and a major tourist attraction, Heidleburg Castle is also known for one more thing: it's home to one of the most (more…)

Ranking Big Bang Theory's Guest Stars

From Stan Lee to Leonard Nimoy, check out the greatest cameos on the CBS sitcom

Quiz: What Should You Binge Next on Netflix?

Skip the endless scroll! Find out what you really want to watch.

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