One of the biggest issues with the original Mo'Creatures mod was compatibility with other mods, which can have a lot fixed using Tweaker mods. However, some things aren't as easily tweaked such as taming. This might be helpful/useful for modpack makers/players trying to make a more immersive experience are...

Adding config options to creatures that allows users to specify custom taming foods on a per mob basis. Something like....

Example:
turtle {
S:biomeTypes=[SWAMP, RIVER]
S:tamingFoods=[minecraft:melon, minecraft:reeds, harvestcraft:lettuceitem]
S:blockedBiomeTypes=[]
B:canSpawn=true
S:dimensions=[0]
I:frequency=12
I:maxSpawn=3
I:minSpawn=1
}