Rows about origin of ginger cats (6)
I believe the answer is:
tigers
'cats' is the definition.
(tiger is a kind of cat)
'rows about origin of ginger' is the wordplay.
'rows' becomes 'tiers' (tier is a kind of row).
'about' means one lot of letters goes inside another.
'origin of' suggests taking the first letters.
The first letter of 'ginger' is 'g'.
'tiers' placed around 'g' is 'TIGERS'.
(Other definitions for tigers that I've seen before include "Large striped cats" , "Large forest felines" , "Sir, get to the animals" , "strong economies" , "Big striped cats poetically burning bright" .)