Humans have an ideal mix of several traits. TierZoo does a [hilariously excellent](https://www.youtube.com/watch?v=ImYu9dJM4kQ) breakdown of it, but your core question of “why can’t (other) animals innovate” can already be summarized as “because they can’t pass on knowledge the way humans can”. Parenting behaviour is a big thing in the animal world but that’s limited to fulfilling basic needs like food & safety and teaching some behaviours.
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