Wild cat is heard making connections (5)
I believe the answer is:
links
'connections' is the definition.
(I know this)
'wild cat is heard' is the wordplay.
'wild cat' becomes 'lynx' (wild cat species).
'is heard' indicates a 'sounds like' (homophone) clue.
'lynx' is a homophone of 'LINKS'.
'making' acts as a link.
(Other definitions for links that I've seen before include "chains" , "Golf course by the sea" , "Joins on the golf course?" , "Bits of chain" , "Where golfers play" .)