Canine (3)
(Other definitions for cur that I've seen before include "Aggressive dog" , "Mangy dog" , "Worthless mongrel" , "A low worthless dog" , "A worthless dog or contemptible person" .)
'canine' is the definition.
(I know that dog is a type of canine)
This is the entire clue.
(Other definitions for dog that I've seen before include "'Every ... is allowed one bite'" , "Follow - canine" , "Hound" , "Cur" , "Worry" .)