Angry with nothing inside apart from strong meat (4,4)
I believe the answer is:
wild boar
'strong meat' is the definition.
(I've seen this before)
'angry with nothing inside apart' is the wordplay.
'angry' becomes 'wild' ('wild' can be a synonym of 'angry').
'with' indicates putting letters inside.
'nothing' becomes 'o' (looks like zero - 0).
'inside apart' becomes 'bar' (I can't explain this - if you can you should give a lot more credence to this answer).
'o' put into 'bar' is 'boar'.
'wild'+'boar'='WILD BOAR'
'from' acts as a link.
Can you help me to learn more?
(Other definitions for wild boar that I've seen before include "Game" , "Feral pig" , "strong meat" , "Non-domesticated pig" , "Untamed pig" .)