Love feeding wild animals? Work behind security screen (4,4)

I believe the answer is:

mona lisa

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'work behind security screen' is the definition.
The definition suggests a singular noun which matches the answer.

'love feeding wild animals?' is the wordplay.
'love' becomes 'o' (love means zero in tennis).
'feeding' is an insertion indicator (one word is fed by another set of letters).
'wild' indicates anagramming the letters.
'animals' is an anagram of 'mnalisa'.
'o' going inside 'mnalisa' is 'MONA LISA'.

Can you help me to learn more?

(Other definitions for mona lisa that I've seen before include "Leonardo da Vinci's painting of enigmatic woman" , "Louvre painting" , "Mysterious-smile Louvre portrait" , "Leonardo da Vinci's enigmatic portrait" , "Famous painting of enigmatic woman by de Vinci" .)

I've seen this clue in The Independent.

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