In a related investigation---

if primates are wiped out in some global catastrophe, what other species is most likely to evolve into an intelligence or civilization. My guess is it would have to be a mammal, or maybe a bird (less likely). Only warm-blooded vertebrates have sufficiently complex anatomies and efficient physiologies that could support intelligence, and an evolved social structure would help.

Most predators would be ruled out, they have to constantly optimize their propulsion, weaponry and sensory systems so they would not develop tool making ability. They are also constrained by having to follow their prey. My guess is rats would take over. They are social, intelligent, omnivorous.

Its a wonder primates were the first to evolve intelligence. Especially since they were forced to give up their major advantage, advanced arboreal capabilities, when they were forced down to the savanna.