Koalas and Eucalyptus Leaves


Throughout their entire lifespan, Koalas typically depend upon the Eucalyptus leaves. Therefore, Eucalyptus is an all in all food for the Koalas. However, there are many different species that belong to the Eucalyptus leaves as well. Moreover, very strangely and to a greater surprise, Koalas select only few of these species that specifically belong to the Eucalyptus. Currently there are about 800 species of Eucalyptus that has been discovered in the wild. On the other hand Koalas have very selected appetite and they only prefer to just less than 100 of those species.

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Koalas Eat Eucalyptus Leaves.
Koalas favorite and only food is Eucalyptus. They are always dependent on Eucalyptus leaves throughout their lives. This picture belongs to 

Moreover, Koalas will only select 8 to 10 of such eucalyptus species in general with which it will feel happy and it will simply ignore the rest of the plantation, even though belonging to the same family and specie. Therefore, Koalas can be regarded as very choosy and finicky when it comes the matter of food. It is very important to note and understand that the Koala will only survive on the food i.e., Eucalyptus leaves which is preferable and approved by the Koala itself. That even raises the fact that Koalas are hard to be kept within the captivity, because it may not prefer the food (Eucalyptus leaves) that might well be supplied to the Koala. Because Eucalyptus leaves may well belong to another species which are unfavorable for the Koalas.

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Koalas prefer different kinds of Eucalyptus leaves.
Koalas prefer different kinds of Eucalyptus leaves. But Koalas in general are very selective in terms of their Eucalyptus leaves' preferences. This picture belongs to  

Coming back to the Eucalyptus leaves, and Koalas, let’s analyze the core composition of a single Eucalyptus leaf which the Koalas. A single leaf of Eucalyptus comprises of 55% water. Therefore, this leaf is good enough to fulfill the thirst and water requirements of the Koalas. Moreover, this is the core reason, that Koalas have been rarely witnessed of drinking any water because the leaves of Eucalyptus which contain 55% water already, specifically fulfills their water requirements.

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Koalas fulfill their water requirements through Eucalyptus leaves.
Koalas fulfill their water requirements through Eucalyptus leaves. Eucalyptus leaves comprise of 55% water on average. This Picture belongs to  

Apart from water, the protein penetration within these leaves of Eucalyptus for Koalas is very low. A single Eucalyptus leaf offers about just 4% of the proteins to the Koalas which are very low but Koalas take it as an only core source of their diet plan. Fiber is highly abundant within the leaves of the Eucalyptus. Less Protein contents mean a relatively less degree of amino-acids and this can be concluded as key limitations within the basic building blocks of the Koalas’ bodies. A single Koala which takes in the single leaf of Eucalyptus tree comprises of only 15% fiber contents. Sugar penetration within the leaves of the Eucalyptus is also relatively low with just 7%. Therefore, carbohydrates which offer immediate energy and which are typically include sugars, are very low and this is the major reason for the Koala to actually have lower energy levels and having more preference for sleeping.

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Koalas fulfill their protein requirements through Eucalyptus leaves.
Koalas fulfill their protein requirements through the Eucalyptus Leaves. Eucalyptus leaves comprise of 4% proteins. This picture belongs to 

The leaves of the Eucalyptus are also enriched with the Cyanide compounds as well. If a normal animal eats them in large number it might lose its life, but Koalas take it on the regular basis and in large numbers and they just live normal. The concentration of the oil contents within a single leaf of Eucalyptus is around 6% while the tannins’ concentration is around 13%. In short the Eucalyptus leaves have their limitations for diet, but Koalas have adapted well to the situation and thrived for millions of years.

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Koalas also consume cyanide compounds while eating Eucalyptus leaves.
Koalas prefer to eat Eucalyptus leaves which are also enriched with the Cyanide Compounds as well. However, Koalas have strong immune system and specialized liver, that helps them against the life-threatening impact of the Cyanide Compounds. This picture belongs to