Animal World Mix

Animals (lat. Animalia) is a traditionally (since the time of Aristotle) ​​distinguished category of organisms, currently considered as a biological kingdom. Animals are the main object of study of zoology.

Animals are eukaryotes (they have nuclei in their cells). The classic signs of animals are: heterotrophy (nutrition of ready-made organic compounds) and the ability to actively move. However, there are many animals that lead an attached lifestyle, and heterotrophy is characteristic of fungi and some parasitic plants.