Young fox (3)
'young fox' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for cub that I've seen before include "Young bear or lion" , "Junior scout; puppy" , "Baby animal, bear say" , "Young newspaper reporter" , "Young one" .)
This could be a double definition.
'young' is the first definition.
(thesaurus)
'fox?' is the second definition.
The definition and answer can be both animals as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
Can you help me to learn more?
(Other definitions for kid that I've seen before include "Schoolboy" , "Deceive - child" , "Pretend" , "Tease; hoodwink" , "Playfully deceive" .)