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' means to look at the middle letters.
'in' indicates putting letters inside.
'prides' becomes 'spier' (I can't justify this - if you can you should give a lot more credence to this answer).
The middle of 'wending' is 'd'.
'd' put 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" .)