IIRC the original experiment that everyone keeps referring to where frogs jump when you put them into boiling water but don't if you heat up the water gradually was frogs with their brains removed.

Which makes using it as a metaphor for the climate change and humanity either entirely wrong or much more fitting, depending on where you stand.

Maybe they are smarter than humans, then!

I misinterpreted the parent comment to mean that they won't notice it because they will be extinct!