A Brief Over-view of the Etymology of Modern Goju-ryu Karate-do Kata. By Joe Swift and Mario McKenna. It is now well documented that Okinawa karate is indebted to the Southern schools of Chinese boxing for much of its technical knowledge and expertise.
Best Answer: They are all warm-blooded, and they all have hair even if you can't see it (including dolphins and whales). Mammals all share mammary glands (milk producing glands). This is the biggest feature, also mammals use 3 bones for hearing and they have hair. Should be noted that endothermy (warm-blooded) is not unique to mammals, birds also share this characteristic.
Primates are mammals that share the following characteristics: 1  hair instead of fur. 2  fingernails instead of claws. 3  opposable thumbs. 4  higher brain-to-body size ratio/high level of intelligence. 5  prehensility (ability to grasp with fingers and/or toes) 6  padded digits with fingerprints.