Quote:speciesSo fish, bird, reptiles , mammals, are all a kind because they all have a spines and were also related to insects,crustaceans, by the fact we all have eukaryotic cells. You see why biologists don't use your classification system.
1. a class of individuals having some common characteristics or qualities; distinct sort or kind.
Seek strength, not to be greater than my brother, but to fight my greatest enemy -- myself.
Inuit Proverb
Inuit Proverb