Different in degree or kind (Introduction)

by Balance_Maintained , U.S.A., Thursday, April 17, 2014, 05:53 (3659 days ago) @ David Turell

Tony: Clearly points to the interbreeding between the lineages. Which would suggest either that A.) They are all sub-species of a single parent species and hence different in degrees, or B) They are all the same species. 
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> You are right about the irony, but, we have to work with some sort of concept of species, even if there is not a clear dividing line: Tigrons and ligers as excamples.-Yes we do, and in your example, they are called cats, or felines.Any successful cross breeding between canines and felines?

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What is the purpose of living? How about, 'to reduce needless suffering. It seems to me to be a worthy purpose.