Full Idea
Even things in the same species have different causes, differing not, evidently, by species but in as much as particular things have different causes. For instance, your matter, form and motive cause are all different from mine.
Gist of Idea
Individuals within a species differ in their matter, form and motivating cause
Source
Aristotle (Metaphysics [c.324 BCE], 1071a27)
Book Reference
Aristotle: 'Metaphysics', ed/tr. Lawson-Tancred,Hugh [Penguin 1998], p.366
A Reaction
Yes! This is the answer to my problem of the docile tiger, which has its own character, as well as the generic form of a tiger. Aristotle is firmly committed to the priority of individual over species.