No a cloned animal does not have buddha nature. A cloned animal is buddha nature, just as is everything else that arises from emptiness, including the emptiness itself.
If you state it as a cloned animal having buddha nature you are supposing an independent entity that possesses some thing or quality called buddha-nature. Non-self means non-self all the way down.
EDIT: changed "not-self" to "non-self" because that seems more correct.
Last edited by m0rl0ck
on Tue Sep 11, 2012 2:24 pm, edited 1 time in total.
We must respect the other fellow's religion, but only in the sense and to
the extent that we respect his theory that his wife is beautiful and his
-- H.L. Mencken, "Minority Report"