My first question, so I am hoping this satisfies the criteria for acceptable questions. I am trying to build an amphibianesque species and have a few questions regarding some plausibility and possibly classification.
Firstly, I was wondering if structural colours would select for eyes that could capture faster movements (I am not sure of the technological terminology), my reasoning being their iridescence would make them more sensitive to swift changes. [can ignore this question if you wish]
Secondly, I read something interesting about hot blood in Nick Lane's Life Ascending: The Ten Great Inventions of Evolution. On page 211, he cites Bennett and Ruben regarding the advantages of hot blood, and essentially it involves greater stamina, and thus greater ability to defend its territory, and greater success in courtship or mating; I am not the sure if the last is due to the effects hot blood would have on offspring, they requiring frequent feeding to sustain their temperatures, but if that is an advantage of hot blood, would it lead to greater parental care, or both acting on each other? And that is where I am having some trouble with classification.
They would lay eggs, have moist skin, and be a mixture endothermic and ectothermic, leaning more towards the former. What would their biology and behaviour make them?
Edit: This species is sapient and I am ultimately asking if this species' capacity for endothermy could provide a plausible foundation for parental care and the behaviour for sapience; in other words, is endothermy necessary to evolve sapience (I want to avoid suggesting yes solely because we did it), and if it would disqualify them as amphibians, which I now realize is broad. [I am now less concerned about classifying them as amphibians]
Clarification on their temperature regulation: they are mesotherms.
They can produce an internal temperature but would still have to mind their external temperatures, which could affect growth rates and other metabolic functions: too hot, slower metabolism, too cool, faster, if I am reasoning correctly. Their temperatures would also be dependent upon the biome, by extension the seasons.