What are the signs of similarity between humans and other mammals?

Humans and animals from the Mammals class have many similarities, of which the main ones are:
– intrauterine development (the embryo develops in the uterus);
– feeding the young with milk.
– the cervical spine of 7 vertebrae;
– the knee joint has a meniscus or a cup;
– hair and skin glands;
– teeth are divided into incisors, canines, molars;
– there is an auricle;
– the diaphragm – the muscle that separates the chest cavity from the abdominal cavity;
– 4 chambers in the heart;
– constant body temperature – warm-blooded.