If possible, attend to some animal sound (5)
I believe the answer is:
bleat
'animal sound' is the definition.
'bleat' can be an answer for 'sound' (bleat is a kind of sound). I'm not sure about the 'animal' bit.
'if possible attend to some' is the wordplay.
'to some' indicates the answer is hidden within the clue.
'BLEAT' is hidden in the letters of 'if possible attend'.
Can you help me to learn more?
(Other definitions for bleat that I've seen before include "Say baa!" , "Cry (like a sheep?)" , "Sound made by goat" , "Whine" , "Make complaint" .)