Elephants and bees are two animals that have a female as the leader.
the babylonians
Vertebrates and invertebrates.
samari with shoguns
He divided animals into two groups- those with red blood and those without it.
Aristotle subdivided his two groups of animals based on their blood. He classified animals as either having blood (vertebrates) or not having blood (invertebrates).
Vertebrates and Invertebrates
Plants and animals
Mammals & birds.
fungi & animals
Quite. If you want to breed them you have to have two females for every one male
Porifera(sponges) and Nematoda(roundworms).
Depends on what sort of animals these are. Probably, yes