Audibly bid farewell to child holding animal (5)
I believe the answer is:
bison
'animal' is the definition.
(I've seen this before)
'audibly bid farewell to child' is the wordplay.
I cannot quite see how this works, but
'child' could be 'son' (male child) and 'son' is present in the answer.
The remaining letters 'bi' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'holding' is the link.
Can you help me to learn more?
(Other definitions for bison that I've seen before include "US wild ox" , "Kind of shaggy cattle" , "Buffalo Bill's prey" , "European beast" , "Large humped bovid of N America" .)