Remark from English farm animals? (7)

I believe the answer is:

epigram

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'remark' is the definition.
(I have seen 'Witty remark' mean 'epigram' so perhaps 'remark' could also mean 'epigram')

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for epigram that I've seen before include "Concise witty remark" , "Witticism - adage" , "Brief witty saying" , "A short witty saying" , "A clever witty saying" .)

I've seen this clue in The Sun.

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