Breed of rabbit (3)
'breed of rabbit' is the definition.
(Angora is a breed of rabbit)
This is all the clue.
(Other definitions for angora that I've seen before include "Wool from hair of goats" , "Goat producing mohair" , "Breed of goat, cat or rabbit" , "A groan from a goat" , "Cloth from the soft hair of a goat" .)
(Other definitions for lop that I've seen before include "Remove branches from a tree" , "Cut (e.g. branch off)" , "Cut off, tree branches say" , "Cut away branches or twigs" , "Hack" .)