The Musha Is an omnivore which only exists in the minecraft universe.
Musha's change in type ,depending on the habitat of which it lives in.
For example the Bog Musha has been tinted to the colour of its bog after around ten Years,
A river Musha would eventually adapt to it's surroundings, improving it's speed in the water, and it's colour to help it blend in to the environment to hide from predator or prey.
However, once a Musha has adapted to one environment, it cannot adapt to another. The first Musha's where born as translucent or plain creatures, with a greyish, white mist about their skin. It is believed that the Original Musha separated and all found their own habitat. But the Musha's adapted to these homes quicker than any other creature. It only takes up to 10 years to fully adapt to it'd environment.
From then on, each time a Musha was born, it had the colour of it's parents' habitat, but with a translucent white viel other it.
Research states that this is the time for the Young Msha to choose whether it wants to change it's environment.

Several Musha have been seen to have eaten many Humans,Zombies,Endermen and even YOU.