I looked up my dry lentils (I never used canned lentils before) and the protein percentages are indeed in your range, 28 for the pink lentils and 24 for the green. The only explanation I can think of is the soaking that comes from cooking the lentils in water means there is a much higher % of water in the final cooked lentils, therefore lowering the protein percentage. If you take 100 grams of lentils and cook them they will weigh much heavier but you will still have the same protein weight. I'm terrible at all kind of number or logical thinking : does this make any sense ?
Random rant : I had actually asked my partner to get "sardines au naturel" when he came back with four cans of cooked lentils. He said the canned fish aisle at the supermarket was too complicated

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I've always kind of liked him, we still listen to some of his CDs.
Out of subject ramble : I really liked the recent collab with Piers Faccini and Abdelkebir Merkane, all aboard. But I like cultural mishmash, I'm a bit ashamed to say this as so much of so called world music is terrible, and I like gnaoua.
Well, then I hope we shouldn't take the analogy as far as to say that you learned something about yourself

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What would you say was the lesson? That even experienced chicken keepers can be surprised by a rooster's agressive behaviour? That caring for a very sick or wounded chicken will build trust ? Or that even an adult rooster can change his behaviour for the worse and for the better ?