What a very interesting article! There are two expressions which I use often in English - 'strong as an ox' and 'to take the bull by the horns' - both direct translations. My favourites from the article don't, as far as I know, have English equivalents: 'dar gato por liebre', which presumably refers to hare being more delicious but also more expensive, than cat, and 'pagar el pato'. (I've just looked up 'cat' in Brewer's Dictionary of Phrase and Fable and found that 'a pig in a poke' (sack) refers to putting a cat in a sack and pretending that it's a pig! Very much the same! As for the duck one, there are many expressions but none quite like 'pagar el pato'!)

I will definitely try and learn a few of these. Thank you, Christian!