Although, I'm not too thrilled with the ''Cannibalism'' In real life. But Inside FeralHeart I find it quite entertaining for Roleplays and such. Especially when the Roleplay hits a ''rough'' spot (Including lack of food for the roleplay, etc.) where one character goes insanely mad to eat it's own kind. Now I don't like the fact that people who Roleplay as Cannibal characters think their Character is in any way ''Stronger'' Than the other folks of the Roleplay when infact they are ''Weaker''. Say you are Roleplaying and inside the Roleplay itself there is a huge lack of food. Everyone is in destress and in fact usually the ''Cannibal'' is the weakest. To the point where the Character thinks they must eat their own kind to survive.
I also love the idea of Characters from a custom Species where the Species is very Cannibalistic. Especially those species you would think would be Herbivores (Usually animals with hooves). I've seen a few people who are Roleplaying as A ''Mad Character who is very Cannibalistic and will eat your family's guts and no one is going to stop me'' Character...And I find that to be a bit hmm...Powerplaying maybe? I guess it's fine if you ask the other person before the Roleplay starts and get their permission first before hand.
Other than that I really enjoy the idea. I might even find my Fursona abit Cannibalistic in some parts. He doesn't eat his own Species but he used to be a Human when he was alive, But now he is dead and feeds on People's Energy and Souls.