No. Neither eucalyptus trees nor the eucalyptus oil that can be extracted from the leaves is "poisonous". However, the oil does contain some toxins which can cause acute gastric problems if ingested.
The few animals which feed on eucalyptus leaves, such as koalas, Ringtail possums and Greater gliders, are able to filter out the toxins through their digestive systems.
Eucalyptus leaves have various medicinal properties, but are generally not eaten by horses or goats due to the high presence of aromatic oils. It is not classified as a poisonous plant by ingestion.
The leaves, bark, and wood are poisonous to people and livestock.
Eucalyptus are evergreen tall trees. It has been introduced from Australia in many countries to reclaim waste land. Its leaves and bark are medicinally important.
Koala
No because Eucalyptus leaves are poisonous to every other living animal except for the Koala. I'm not sure if it is safe or not, but there is an overhanging eucalyptus tree that my orphaned lambs like to chew on sometimes. So, while it's meant to be poisonous, I don't think it's bad for them if they eat it sometimes.
No. Koalas feed almost exclusively on eucalyptus leaves, supplemented by eucalyptus flowers and occasionally even bark. They do not eat animal proteins of any description.
Eucalyptus bark does not contain juice. Bark is quite dry, and the only things sometimes in the bark are various insects and insect larvae.
No. Koalas do not eat fruit. They eat the leaves of eucalyptus trees, as well as gum blossoms. They sometimes feed on bark, in small portions.
A poisonous compound found in the seeds, bark, and leaves of the sugar apple (cherimoya) tree.
If there were no eucalyptus at all, a koala would, quite simply, die. If there were no leaves, it could subsist on the buds, flowers and even bark of their preferred species - but then, without leaves, the tree itself would die, meaning there would be no buds or flowers.
Sometimes. Koalas are known for feeding almost exclusively on certain species of eucalyptus leaves. However, koalas have been known to also eat the buds, flowers and bark of these particular species, while dirt also seems to supplement mineral deficiencies.
Leaves of the eucalyptus tree, which is native to Australia.