I'm too lazy to read this but not enough not to throw my two cents. Non-human mammals are amazing considering how many of them are incredibly capable very earl

I'm too lazy to read this but not enough not to throw my two cents. Non-human mammals are amazing considering how many of them are incredibly capable very early. I'm thinking mostly of large prey for whom the ability to walk and run is crucial. Basically they need to be able to do many things very quickly. It's incredible to see how fast so many new-born grow in so many species. Also, I've searched for the word "play" in this article and found no occurrence. To me how young mammals play and more importantly what drives them to do so is the core mystery behind the development of the mammalian brain. I suspect that once this is cracked, a big part of the work will be done.