People sometimes wonder what an animal is. Animal is defined as having the ability to move and live on their own without the help of another living being. Animals are multicellular, ectoplasmic, eukaryotic living organisms in the Kingdom Animalia. With few exceptions, all animals eat food, breathe air, can reproduce by means of sexual reproduction, can move, and have a complex nervous system.
People sometimes wonder what domestic animals are. Domesticated animals are basically domesticated forms of wild animals. In fact, if you go far enough back into history, almost all of the people on the planet that were not agriculturalists were farmers who raised livestock for profit. The majority of domestic animals are used for food, companionship, and breeding purposes.
An animal’s life cycle begins at birth. The term of life of an animal refers to the time it takes for that animal to reproduce. Birth, death, reproduction, migration, and life cycle are all important aspects of an animal’s life cycle. Within an animal’s life cycle, there is the basic animal body plan, the number of somatic cells (both animal and plant), the digestive system, the nervous system, the respiration process, and the reproductive process.
All animals, insects, plants, and even worms have a basic animal body plan. The body plan of an animal refers to the proportions of its organs and tissues. The number of somatic cells throughout an animal’s body, the types of cells it contains, and the distribution of these cells throughout the animal are traits of its body plan. All animals have a set of ribs, limbs, vertebrae, and various organs.
All animals have a set of sexual reproductive systems. In species that have a highly complex sexual reproductive system, e.g., whales, birds, reptiles, and mammals, there is a distinction between different types of sexual reproduction. Asexual reproduction involves reproduction without the involvement of a mate. The other major type of reproduction is asexually reproduced reproduction, which involves reproduction through sexual contact between a male and a female that leads to offspring.
Insects belong to the kingdom Protista, which is classified into two main groups: Prototheria and Diplobata. Insects belong to two different categories that are considered to be subkingdom: chordy and eutherian. Within the kingdom Diplobata, there are two major divisions: Cimiciformes and Lepismatidae. Cimiciformes include bees, wasps, ants, and bumble bees. The insect kingdom is a very large place, and animals are very diverse.