Oak processionary Oak processionary The oak processionary "(Thaumetopoea processionea)" is a moth whose caterpillars can be found in oak forests. They are a human irritant because of their venomous setae (hairs), which can cause skin irritation and asthma. The moths are widely distributed in central and southern Europe, and are occasionally found as far north as Sweden. In the southern countries of Europe the populations are controlled by natural predators, but these predators do not exist in northern Europe. Their range is expanding northward, possibly or partly as a result of global warming. The moth now has an established population in the
Human–animal hybrid that caregivers for the captive animals struggle with. A chimera is not the same thing as a hybrid because it is a being composed of two or more genetically distinct cell lines in one entity. The entity does not exist as a member of a separate species but has differing elements inside of it. An animal that has experienced an organ transplant or related surgery involving tissues from a different species is an example. Throughout past human evolution, hybridization occurred in many different instances, such as cross-breeding between Neanderthals and ancient versions of what are now modern humans. Some scientists