How a Brainless Organism Learns Using Neuron-Like Machinery

https://neurosciencenews.com/single-cell-learning-camkii-30629/ 

‘The Brain, In Theory,’ an excerpt

https://www.thetransmitter.org/theoretical-neuroscience/the-brain-in-theory-an-excerpt/

Dogs’ brains began to shrink at least 5,000 years ago, study finds

https://www.theguardian.com/science/2026/apr/29/dogs-brains-shrink-5000-years-ago?CMP=share_btn_url