Three Quick Questions

Hello everyone, it's me, TheGreatKingBoo_

Today, i've just got three quick questions, all of which regarding mobs, and if you could answer me, it would really be fantastic! So, these are my "Problems":

-How do i make an acquatic mob breathe in water? Yes, yes, i know that both the WaterMob and the WaterCreature (And also the Squid AI Base and the Swim AI are present, tho i want my mob to swim like squids, so by not staying on the surface) exist but...i don't know why, they don't work for me. A custom mob i created had both WaterMob, WaterCreature AND Squid AI active, but none of these worked, it didn't swim like a squid, nor it breathe underwater. If you could give me some kind of code and tell me where to put it, it would be very useful!

-How do i animate alot of my custom mob's part with just one animation? What i mean is, how can i give like, 6 parts of my mob, the same animations as the leg?

-I dunno if this is a bug, but how can i make my mob scared of player WITHOUT needing to put an item that makes it follow you? I'll make an example on this: I want to add..,i dunno, new variations of the Ocelot, but i want them to just be scared of the player, and maybe breeded with fishes, but not that it follows you when you hold an item. Is there a way to do it?

Thank you all for reading my questions, hope you can answer them, and we'll se ourselves on my Ecoindustries Mod Page for some updates and/or sneek peeks!