>>149079285I remember back in the 90s, someone wrote a letter to Archie because they were concerned what the chili dogs were made out of, and ultimately they reasoned that they HAD to be made of chicken, because there was an issue where Sonic made chicken soup using leftover chili dogs, and it couldn't be called "chicken soup" unless there was chicken in it.
I can't say I recall any sentient/sapient chickens in any Sonic media, but I'm sure there's probably some background character in a comic somewhere.