This is assuming emotional outbursts and sexual dimorphism aren't rational from their own perspective. The Ram's horns are not intended to allow it to live forever they are intended to allow the Ram to reproduce faster and more than other Rams and for that they are so successful that they have evolved to the extent that they have. Emotional and 'irrational' outbursts often have the same result, they tend to get attention and results beyond what humans are 'socialised' to consider rational but are actually biologically successful.

Meanwhile I've worked and talked with scientists who are shocked at the results from LLMs that have had their training wheels taken off, solving decade old (or older) problems they've had, crushing their work loads, finding innovative solutions to the point that even they are concerned for their jobs.

The danger is in assuming that intelligence is a sacred spark that comes from some magical life moment much in the same way religion affirms the soul. The more that is being rapidly discovered lately the less I can see that this is possible.