Animal's orgasms regularly ignored (3)
I believe the answer is:
ram
'animal's' is the definition.
(male sheep)
'orgasms regularly ignored' is the wordplay.
'regularly ignored' indicates alternate letters (letters removed at regular intervals).
The alternating letters of 'orgasms' are 'RAM'.
(Other definitions for ram that I've seen before include "The constellation Aries" , "Pound" , "crowd" , "Strike violently" , "Crash into like male sheep" .)