Children pursuing small mammals? Insufferably twee (6)
I believe the answer is:
kitsch
'mammals? insufferably twee' is the definition.
I can't tell whether this definition defines the answer.
'children pursuing small' is the wordplay.
'children' becomes 'ch' (genealogical abbreviation).
'pursuing' is a charade indicator (letters next to each other).
'small' becomes 'kits' (I am not sure about this - if you are sure you should believe this answer much more).
'ch' after 'kits' is 'KITSCH'.
Can you help me to learn more?
(Other definitions for kitsch that I've seen before include "Garishly sentimental items" , "Tawdry art" , "Garish or vulgar items" , "Inferior art" , "Vulgar, sentimental, art" .)