Name two characteristics that allow a elephant, beetle, and bird to be classified together, and identify the group to which they all belong to?

Some organisms have attributes of both plants and animals. For instance, there is a group of common single-cell species living in fresh water ponds called kingdoms. However, there are very likely around ten times as many viruses as all living things put together. It includes all of the fish, amphibians, reptiles, birds, and mammals.