Father also included creature (5)
I believe the answer is:
Here is my best explanation:
'creature' is the definition.
(panda is a type of creature)
'father also included' is the wordplay.
'father' becomes 'pa' (pa is a kind of father).
'also' becomes 'and' (I've seen this before).
'included' is an insertion indicator.
'pa' placed around 'and' is 'PANDA'.
(Other definitions for panda that I've seen before include "Exotic animal", "One eating bamboo", "Police car", "giant animal", "Black-and-white bear", "shoots lover", "Racoon-like animal", "Bamboo-eater", "Bamboo-eating mammal" and "Black and white beast".)