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You are a mammal.
You are homeothermic (warm-blooded), follicle-bearing and have lactal nipples. And of course, not all synapsids are or were mammals, but all mammals are synapsid, implying common descent.
You are eutherian.
Or more specifically, you are a placental mammal, like most other lactal animals from shrews to whales. All eutherians are mammals, but not all mammals are eutherian. There are six major divisions in mammalia, only three of which still exist; those that hatch out of eggs like reptiles (monotremes), marsupials, that are born in the fetal stage and complete their development inside the mother's pouch, and those that developed in a shell-like placenta and were born in the infant stage, as you were. Your own fetal development seems to reveal a similar track of development from a single cell to a tadpole-looking creature, then growing limbs and digits out of your finlike appendages, and finally outgrowing your own tail. Some would consider this an indication of ancestry. Especially since fetal snakes, for example, actually have legs, feet, and cute little toes, which are reabsorbed into the body before hatching, implying common descent.
You are a primate.
You have five fully-developed fingers and five fully-developed toes. Your toes are still prehensile and your hands can grasp with dexterity. You have only two lactal nipples and they are on your chest as opposed to your abdomen. These are pointless in males, which also have a pendulous penis and a well-developed ceacum or appendix, unlike all other mammals. Although your fangs are reduced in size, you do still have them along with some varied dentition indicative of primates exclusively. Your fur is thin and relatively sparse over most of your body. And your claws have been reduced to flat chitinous fingernails. Your fingers themselves have distinctive print patterns. You are also susceptible to AIDS and are mortally allergic to the toxin of the male funnel web spider of Australia (which is deadly to all primates, but only dangerous to primates, which is why you'd better beware of these spiders). And unlike all but one unrelated animal in all the world, your body cannot produce vitamin-C naturally and must have it supplemented in your diet, just as all other primates do. Nearly every one of these individual traits are unique only to primates exclusively. There is almost no other organism on Earth that matches any one of these descriptions separately, but absolutely all of the lemurs, tarsiers, monkeys, apes, you, and I match all of them at once perfectly, implying common descent.
You are an ape.
Your tail is merely a stub of bones that don't even protrude outside the skin. Your dentition includes not only vestigial canines, but incisors, cuspids, bicuspids, and distinctive molars that come to five points interrupted by a "Y" shaped crevasse. This in addition to all of your other traits, like the dramatically increased range of motion in your shoulder, as well as a profound increase in cranial capacity and disposition toward a bipedal gait, indicates that you are not merely a vertebrate cranial chordate and a tetrapoidal placental mammalian primate, but you are more specifically an ape, and so was your mother before you.
Genetic similarity confirms morphological similarity rather conclusively, just as Charles Darwin himself predicted more than 140 years ago. While he knew nothing of DNA of course, he postulated that inheritable units of information must be contributed by either parent. He rather accurately predicted the discovery of DNA by illustrating the need for it. Our 98.4% to 99.4% identical genetic similarity explains why you have such social, behavioral, sexual, developmental, intellectual, and physical resemblance to a bonobo chimpanzee. Similarities that are not shared with any other organism on the planet. Hence you are both different species of the same literal family. In every respect, you are nearly identical.
You, sir, are an ape.
