This is probably a pointless thread, but I was just wondering about what everyone else s ideas are regarding ghoul biology and early life. Here are some of mine.
This is going to come off as really gross and maybe a little perverted,but I have a theory on ghoul babies. Since ghouls can only derive sustenance through human flesh, how can ghoul babies eat without teeth (I am assuming they are born much like humans since even dogs, who are mostly carnivorous, are born without teeth)? My gross little theory is that ghoul mothers's secrete blood through their breasts as opposed to milk. I know it sounds gross, but it makes sense if you think about ghouls in general.
My second theory is about kagune use. I was wondering if using their kagune is instinct or if it's something that they have to be taught to use. After some thought, I think that the majority of it must be instinct since we saw a young Touka attack an investigator with her ukaku in chapter 71. We don't know whether or not Ayato and Touka's father taught them how to use it, but judging by his overall behavior, it would not seem to be something he would be overly concerned about (especially since he seemed to want to coexist with people and only hunt when necessary).
In chapter 34, Itori briefly went over the fact that only a ghoul mother and a ghoul father can naturally produce a ghoul, but she did not say anything about kagunes (aka RC types). Does a mother and father have to have the same type of kagune? Are there such things as recessive and dominant kagune types? After comparing notes on Hinami and Touka it appears that it is the luck of the draw in regards to what kind of kagune a ghoul child will inherit. The Kirishima siblings both have an ukaku kagune, but their father has a koukaku kagune (I am going be the TG wiki as a refresher, so I apologize if I am incorrect on any of the kagunes). Although not directly stated, we can assume that their mother was an ukaku type. The only thing that baffles me is hybrid kagunes like Hinami's (a mix of koukau and rinkaku). Her mother had a koukaku and her father had a rinkaku, so do some kagunes mix while others do not?
Those are some my my thoughts anyone else have any ideas or questions?