Animal’s name the panel worked out (8)
I believe the answer is:
elephant
'animal's name' is the definition.
(elephants are animals)
'the panel worked out' is the wordplay.
'worked out' indicates an anagram.
'the'+'panel'='thepanel'
'thepanel' with letters rearranged gives 'ELEPHANT'.
(Other definitions for elephant that I've seen before include "Size of paper" , "Pachyderm hunted for ivory" , "The animal that never forgets" , "Large pachyderm" , "Source of ivory" .)