None, because koalas do not eat "everything". Koalas feed almost exclusively on gum (eucalyptus) leaves and flowers. No other animal can eat the gum leaves.
No. Koalas do not eat any animal proteins. They are purely herbivorous.
Koalas are social animals within their own species. The animals have few predators. Among the animals that will hunt and eat koalas are dingo's, owls, eaglets, and pythons.
Wild animals such as koalas do not eat "breakfast". They take the opportunity to eat whenever they feel like it. Koalas only ever eat certain types of eucalyptus leaves and flowers, and they often 'graze', eating continually for awhile.
No. Koalas are strictly herbivorous, feeding almost exclusively on eucalyptus leaves. They do not eat any animal proteins at all.
Herbivores like Giraffes, koalas, cows etc.
Gorillas do not eat koalas. Gorillas and koalas do not even occupy the same continent. Few animals eat the koala. Unsupervised dogs frequently kill koalas, but they do not eat them. Dingoes will eat koalas, and birds of prey may try to take koala joeys. Quolls may even attempt to eat a young joey if it is not secure in its mother's pouch.
Koalas eat a diet of eucalyptus leaves. Most animals are unable to do this because the leaves are poisonous. The back molars of Koalas are also different, in that they are shaped to permit cutting and sawing.
No. Neither Anericans nor anyone else eats koalas. They are protected native animals and may not be hunted, killed or eaten.
Eat mainly near-toxic leaves as their main diet.
The correct name for e so-called native cat is "quoll". these animals, which are marsupials (like koalas) do not generally pose a risk to koalas. Koalas and quolls are around the same size, and quolls a unlikely to challenge adult koalas, or to even try and take a joey from a female koala's back. However, quolls are certainly a threat to juvenile koalas which have only just left their mothers. Non-native, feral cats are considerably more dangerous, and certainly eat koalas.
Yes, some animals like koalas can eat eucalyptus leaves because they have adapted to digesting them, but they are toxic to many other animals and humans.
Plants do not eat dead animals. In terms of the various decomposing agents that "consume" dead koalas, all of these are fungi, bacteria, protists or animals. Plants are almost exclusively autotrophic.