Wild acts by domesticated felines (4)
I believe the answer is:
cats
'domesticated felines' is the definition.
'wild acts' is the wordplay.
'wild' is an anagram indicator.
'acts' is an anagram of 'CATS'.
'by' acts as a link.
(Other definitions for cats that I've seen before include "1981 Lloyd Webber musical" , "Some 6 Downs" , "Pets - musical" , "Musical; jazz fans" , "Feline mammals" .)