Worried mangier pet might do this if not neutered (10)

I believe the answer is:

impregnate

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'do this if not neutered' is the definition.
The definition suggests a singular noun but the answer is not.

'worried mangier pet' is the wordplay.
'worried' is an anagram indicator (worry can mean to interfere with or disturb).
'mangier'+'pet'='mangierpet'
'mangierpet' is an anagram of 'IMPREGNATE'.

'might' acts as a link.

Can you help me to learn more?

(Other definitions for impregnate that I've seen before include "Saturate - permeating (anag)" , "soak" , "Saturate with a substance" , "Infuse" , "Fill" .)

I've seen this clue in The Irish Times.

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