Is cro on Ethereum?

Could you clarify for me, is CRO a token that exists on the Ethereum blockchain? I'm trying to understand the intricacies of the cryptocurrency ecosystem and I'm curious about the specific platforms or networks that various tokens operate on. If CRO is indeed on Ethereum, I'd like to know more about how it interacts with the Ethereum network and what kind of functionality it offers. However, if it's not on Ethereum, could you please elaborate on the platform it does operate on and how that might differ from Ethereum? Your insights would greatly assist me in navigating this complex yet fascinating world of crypto assets.