Are insects animals?

Yes, insects are animals. 

All the animal species known to us are divided into two categories, depending on the presence or absence of a backbone, as vertebrates and invertebrates. Those that have the backbone are called vertebrates and the animals that do not have a backbone are called invertebrates. Insects are invertebrates and are part of the phylum Arthropoda. There are over 1 million known species of invertebrates and of these, almost 75% are insects. In comparison, there are about 58,000 known species of vertebrates. Insects' bodies have three distinct parts: head (used for feeding and sensory application), thorax (body segments consisting of legs and wings, if any) and abdomen (used for reproduction). Insects are unlike other invertebrates and have a common body structure, typically with six legs (although some may also have wings).

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