The Moo is a stange bovine creature who closest realtion is the Highland Cow (or heelan coo).
It's lack of eyes and ears means that it relies entirelyon it's sense of smell and touch. These senses have become incredibly sophisticated in the Moo that it can create a visual image in it's head of what it's surroundings look like. it can ever smell the colour of something!
The Moo is so called because of the constant moo-ing noise it makes when breathing through it's large nostrils. It of course cannot hear this rather annoying noise except when it is in large numbers, where the virations of all the deep moo-ing noises from all the Moo can be felt through the Earth. This distorts the Moo's visual in it's head that it has based on touch and smell and may send the heard into a stampeding frenzy, which only causes more vibration and a deeper frenzy.
These frenzies do not stop until the heard of Moo reach water and the shock of the impact snaps them out of it.
In drier countries or during a hose pipe ban these stampedes can go on for days, exhausting the heard and sometimes killing off the weaker ones. The only other thing that can stop the frenzied Moo is the presense of a Skonk, which will knock out most creatures instantly.
The large awkward tusks that the Moo bears are not used for anyting, not even display as the Moo is blind. No-one knows why they have them as all them seem to do is make the Moo drool constanly.