Nervously edges, following antelope (5)
I believe the answer is:
nyala
'antelope' is the definition.
(nyala is a kind of antelope)
'nervously edges following' is the wordplay.
'edges' means to remove the middle letters (I've seen 'edging' mean this (edging means the letters on the edges)).
'following' becomes 'a la' (I've seen this in another clue).
'nervously' with its middle taken out is 'ny'.
'ny'+'ala'='NYALA'
(Other definitions for nyala that I've seen before include "African animal" , "Antelope of southern Africa" , "crested antelope" , "Ruminant" , "South African resident" .)