Animal a bee initially lives on? (5)
I believe the answer is:
bison
'animal' is the definition.
(I've seen this before)
'a bee initially lives on?' is the wordplay.
'initially' says to take the initial letters.
'lives' becomes 'is' ('be' can be a synonym of 'live').
The initial letter of 'bee' is 'b'.
'b'+'is'+'on'='BISON'
(Other definitions for bison that I've seen before include "Large shaggy wild ox" , "US wild ox" , "It's a buffalo in America" , "Large shaggy-maned animal" , "European buffalo" .)