[rsynnott]

Well, no, I’m actually surprised that whoever wrote the Old Testament _was_ up enough on their biology (or at least aligned with biology, however accidentally) to realise that most animals reproduce sexually. This certainly wasn’t the conventional view in the Greek world, say, nor was it in the West until the 18th century or so.

[giveita]

What was this view exactly? They would have know their pets and farm animals reproduced sexually. I guess it isn't a leap to think all mammals? So what animals did they think did not?

[rsynnott]

So, we tend to think that it’s just common sense that most animals reproduce sexually (actually I think most people would assume that _all_ animals do; in fact, as with most things, there are edge cases), but, well, to an extent that’s because we already know that. The historical view was a bit different: https://en.wikipedia.org/wiki/Spontaneous_generation

This isn’t even the only weird idea that people used to have about reproduction; there’s also stuff like https://en.wikipedia.org/wiki/Barnacle_goose_myth

[aetherson]

Mice, flies, vermin of various kinds that seemed able to show up anywhere from no obvious parents.