Wild cat with sound connections? (4)
I believe the answer is:
lynx
'wild cat' is the definition.
(wild cat species)
'sound connections?' is the wordplay.
'sound' indicates a 'sounds like' (homophone) clue.
'connections?' becomes 'links' ('link' can be a synonym of 'connection').
'links' is a homophone of 'LYNX'.
'with' acts as a link.
(Other definitions for lynx that I've seen before include "Big cat" , "Keen-eyed feline" , "one with exceptionally good sight" , "Short-tailed wildcat, often with tufted ears" , "One with sharp eyes" .)