Creature going around in prides (6)
I believe the answer is:
spider
'creature' is the definition.
(spider is a kind of creature)
'going around in prides' is the wordplay.
'going' becomes 'wending' (wend can mean 'go', as in the past tense 'went').
'around' says to take the centre.
'in' indicates putting letters inside.
'prides' becomes 'spier' (I can't justify this - if you can you should believe this answer much more).
The central letter of 'wending' is 'd'.
'd' placed within 'spier' is 'SPIDER'.
Can you help me to learn more?
(Other definitions for spider that I've seen before include "Prised open the arachnid" , "Spinner" , "Arthropod; snooker rest" , "A crawler" , "Member of arachnid family" .)