Yes, humans are animals. From a biological standpoint, humans belong to the animal kingdom, specifically the phylum Chordata and the class Mammalia. We are part of the order Primates, which also includes other primates like monkeys, apes, and lemurs.
Humans share many biological characteristics with other animals, including the presence of cells, tissues, and organs, as well as the need for food, water, and oxygen to survive. Like other mammals, we are warm-blooded, have hair or fur (though in humans, it's usually fine and limited), and give birth to live offspring, nourishing them with milk produced by mammary glands.
While humans have unique cognitive abilities that distinguish us from other animals, including complex language, culture, and advanced problem-solving skills, our biological makeup places us firmly within the animal kingdom.