That man interrupts canine with a doggy treat? (4)
I believe the answer is:
chew
'a doggy treat?' is the definition.
The definition and answer can be both things that one consumes for nourishment as well as being singular nouns.
Maybe you can see an association between them that I don't see?
'that man interrupts canine with' is the wordplay.
'that man' becomes 'he' (he refers to a man).
'interrupts' is an insertion indicator.
'canine' becomes 'c' (dental abbreviation).
'with' becomes 'w' (short for with).
'c'+'w'='cw'
'he' going into 'cw' is 'CHEW'.
Can you help me to learn more?
(Other definitions for chew that I've seen before include "Bite and grind food in the mouth" , "Work between teeth, masticate" , "Ruminate" , "champ" , "Gnaw" .)