How are humans and animals alike?

Man and other animals have a lot of similar characteristics, so they were all united into one kingdom – Animals. All their species have a genetic code for the nucleus, which first appeared in unicellular eukaryotes. In humans and animals, there is a two-sided symmetry of the body, a bone skeleton (it was first discovered in fish). Man, like some animals, has five-fingered limbs. Humans have pulmonary respiration like mammals, reptiles, and amphibians. Man and mammals are born through viviparity.