He's known for that egg his dog consumed (6)
I believe the answer is:
curate
'he's known for that egg his' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'dog consumed' is the wordplay.
'dog' becomes 'cur' (both can mean a despicable person).
'consumed' becomes 'ate' (to eat is to consume food).
'cur'+'ate'='CURATE'
Can you help me to learn more?
(Other definitions for curate that I've seen before include "Member of the clergy" , "He didn't really want an egg" , "Assistant cleric" , "His egg is said to be good in parts." , "Take care of collection" .)