Bear with immature, backward and belligerent cry (3,5)

'belligerent cry' is the definition.

'bear with immature backward' is the wordplay.
'bear' becomes 'pooh' (Winnie the Pooh).
'with' becomes 'w' (abbreviation**).
'immature' becomes 'raw' (I've seen this before).
'backward' says the letters should be written in reverse.
'pooh'+'w'+'raw'='poohwraw'
'poohwraw' in reverse letter order is 'WAR-WHOOP'.

'and' is the link.