Walrus's is the possesion form of it, not plural. The plural of walrus is walrus. It has no plural, or the plural is the same as the singular (I.E. Deer it's not deers. It is just deer).
I don't see a problem. Ray had the same thing a while back. (Ray.is trade room)
Let me guess you want to be an english teacher
Just like Yoyo?
Another one fish not fishes, my sisters friend always used to say the fishes. It was funny, idk if he was doing it on purpose or not, idk.