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ANSWER:
This answer is based on animals that have been important to the advancement of mankind over the last 13,000 years (as prescribed by the theory of evolution).
The horse and camel: Domesticated animals that allowed great advancement in agriculture, transport and warfare and provided high levels of energy and protein.
The cow, ox, donkey and llama: Domesticated animals that allowed great advancement in agriculture and transport, but not so much in warfare. Also provided high levels of energy and protein.
The dog, pig, goat and sheep: Medium-sized domesticated animals that provided high levels of energy and protein and some advancement in transport.
The chicken, duck, turkey, rabbit and guinea pig: Small domesticated animals provided high levels of energy and protein.
The cat: Domesticated cats were kept to hunt mice and rats, reducing the loss of food and rodent-borne diseases.
The mosquito, flea and louse: These 3 have played an important role to mankind by reducing the population through transmitting malaria (kills 1.5 to 3 million people annually), plague (has killed approximately 200 million people to date) and typhus (killed 6 million people around WWII alone) respectively.
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