Creature going around in prides (6)

I believe the answer is:

spider

I'm a little stuck... Click here to teach me more about this clue!

'creature' is the definition.
(spider is a kind of creature)

'going around in prides' is the wordplay.
'prides' anagrams to 'SPIDER'.
But, I am not sure how the anagram is indicated.

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" .)

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