All eukaryotic lifeform (i.e. not bacteria or archaea) are grouped into four kingdoms: Plants, Animals, Fungi and Protists.
A plant is a truly multicellular organism with cell walls composed of cellulose. They are typically autotrophic, meaning that they produce their own food, in this case via photosyntheses.
An animal is a truly multicellular organism with no cell wall. They are heterotrophic, meaning that they cannot produce their own food and must seek nutrients from sources.
A fungus is a truly multicellular organism with cell walls composed of chitin. They are heterotrophic.
Protists are typically unicellular organisms, though occasionally they may lump together to form something that looks like a multicellular organisms, though unlike the others they will have no tissues. Depending on the protist, they may be heterotropic or autotrophic.
Insects are multicellular organisms. The cells of an insect do not possess a cell wall. Insects obtain their nutrients from other sources by eating. This satisfies the criteria to be classified as animals.
Approximately 84% of all animals are classified as arthropods, making them the largest animal group on Earth in terms of species diversity. Arthropods include insects, spiders, crustaceans, and other invertebrates with segmented bodies and exoskeletons.
Tapirs probably do eat some insects because they are grazing animals. They actually eat mostly plants and are classified as herbivores.
The Greek philosopher Aristotle classified animals based on their habitats and physical characteristics. He grouped animals into different categories such as land animals, water animals, and air animals. He also classified animals based on their blood composition, dividing them into red-blooded (mammals and birds) and bloodless (fish and insects).
All insects are animals. Insecta is a class under the kingdom Animalia. Butterflies are insects, thus they are also animals.
Most animals are classified as belonging to the kingdom Animalia. They are further classified into different phyla, classes, orders, families, genera, and species based on their characteristics and evolutionary relationships.
Aristotle classified the animals he studied by 2 ways: Biology Zoology
Vertebrates are animals with a backbone (a.k.a a spine) we are vertebrates and so are the rest of the mammal kingdom. Invertebrates are animals without a backbone like crustacean (Crabs) and Arachne and insects.
Butterflies are insects, not mammals. Insects are characterized by having three body segments, six legs, and usually wings, while mammals are warm-blooded animals with hair or fur, live births, and mammary glands to nurse their young.
Animals are classified into two major phyla: Chordata and Arthropoda. Chordata includes vertebrates like mammals and birds, while Arthropoda includes insects and crustaceans.
Insects
A honeybee belongs to the animal kingdom. Honeybees are classified as insects within the kingdom Animalia, which includes all animals.
Grasshoppers can be classified into the insects group.