Big beast runs wild - no heroics! (10)

I believe the answer is:

rhinoceros

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

'big beast' is the definition.
'rhinoceros' can be an answer for 'beast' (I've seen this before). I am not sure about the 'big' bit.

'runs wild no heroics' is the wordplay.
'runs' becomes 'r' (cricket abbreviation).
'wild' is an anagram indicator.
'no'+'heroics'='noheroics'
'noheroics' anagrammed gives 'hinoceros'.
'r'+'hinoceros'='RHINOCEROS'

Can you help me to learn more?

(Other definitions for rhinoceros that I've seen before include "Endangered animal" , "Horny character" , "Horned mammal" , "Pachyderm" , "Big game" .)

I've seen this clue in The Independent.

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