Sheldon's happiness is 0 out of 100.
Mo eggs are, obviously, shiny and pretty. So shiny that they sparkle even at night (yes -- without a light source)! Mo eggs are, currently, the most coveted egg in Ark; they are extremely rare. If you do happen to obtain one of these eggs, it's best not to tell anybody. The chances of Mo eggs being stolen are rather high. If you have a Mo egg and ever think somebody is plotting to kill you or steal the egg, report it to the authorities at the Town Hall.
Mo are a heavenly bird that sing sweeter than a symphony or any human voice. Mo's beauty surpasses all other creatures (to many) and some speculate that Mo are not of Ark, but of some other distant world. Mo are also excellent parroters and can carry on somewhat lengthy intellectual conversations (forming their own thoughts and opinions); one never feels alone with a Mo. Mo like to keep warm and, as a result, enjoy being close to their masters. Mo can also travel long distances without stopping for food or water, so if you ever go on an adventure with a Mo, don't expect yourself to keep up!