About time to see moggy (3)
I believe the answer is:
cat
'moggy' is the definition.
(I've seen this before)
'about time to see' is the wordplay.
'about' becomes 'a' (abbreviation in Chambers).
'time' becomes 't' (abbreviation).
'to' says to put letters next to each other (I've seen this in other clues).
'see' becomes 'C' (the word for the letter, according to Chambers).
'a'+'t'='at'
'at' put after 'c' is 'CAT'.
(Other definitions for cat that I've seen before include "Animal - one with nine tails!" , "Carnivore; whip" , "Lash < jazz fan" , "A tom" , "Grimalkin" .)