Crossword Genius

Wolves by shore, worrying another animal (9)

Ross

I believe the answer is:

packhorse

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

'another animal' is the definition.
'packhorse' can be an answer for 'animal' (I've seen this before). I am not certain of the 'another' bit.

'wolves by shore worrying' is the wordplay.
'wolves' becomes 'pack' (pack of wolves).
'by' says to put letters next to each other.
'worrying' is an anagram indicator.
'shore' anagrammed gives 'horse'.
'pack'+'horse'='PACKHORSE'

Can you help me to learn more?

(Other definitions for packhorse that I've seen before include "Beast of burden" , "animal" .)

I've seen this clue in The Mirror and The Daily Express.
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