Horny beast seen in much of Auld Sod (5)

I believe the answer is:

eland

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

'horny beast' is the definition.
'eland' can be an answer for 'beast' (I've seen this before). I'm not certain of the 'horny' bit.

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for eland that I've seen before include "African mammal" , "Led an (anag) -- antelope" , "Spiral-horn antelope" , "wild creature" , "One browses in the African plain" .)

I've seen this clue in The Guardian.

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