The lizard brain is not merely a concept. It's real, and it has its place on the top of our spine. 'Why did the chicken cross the road?' is 'because its lizard brain told it to.' Wild animals are wild because the only brain they posses is a lizard brain. But, is the lizard brain any way inferior?
This is a Japanese story; believe it at your risk. I share it in the very shape I got it. “In order to renovate the house, a man in Japan breaks open one of the house walls. Japanese houses normally have a hollow space between the wooden walls. When tearing down the walls, he found that there was a lizard stuck there, because of a nail from outside hammered into one of its feet. He sees this, feels pity, and at the same time curious, as when he checked the nail, it was nailed 10 years ago when the house was first built. Then he wondered how this lizard survived for 10 years, without moving a single step, since its foot was nailed! So he stopped his work and observed the lizard, what it has been doing, and what and how it has been eating. Later, not knowing from where it came, there appeared another lizard, with food in its mouth. Ah! He was stunned and touched deeply - another lizard has been feeding it for the past 10 years...”
The story would have touched your hearts and there could be some who might take it as real, because in animal life such things are probable.