Crossword Genius

What covers individual's head? (4)

Ross

I believe the answer is:

topi

I'm a little stuck... Click here to teach me more about this clue!

'head?' is the definition.
The definition and answer can be both animals as well as being singular nouns.
Maybe they are linked in a way I don't understand?

'what covers individual's' is the wordplay.
'what' becomes 'top' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'covers' is a charade indicator (letters next to each other).
'individual' becomes 'i'.
'top'+'i'='TOPI'

Can you help me to learn more?

(Other definitions for topi that I've seen before include "Pith-helmet" , "African antelope" , "Item of clothing" , "Pith helmet" , "Large antelope; pith hat" .)

I've seen this clue in The Telegraph.
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