No, no and no.

Feeding live does not make them "aggressive"

They are Monitors, Monitors did not make it to the top of the food chain by playing nice.

The last thing on earth that you want is another one of those slow moving "Puppy dogs" like you see on youtube, they are all sick and dying.
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Regards,
Wayne A. Harvey
Thamnophis US
Savannah Monitors
Snakes and Lizards, It don't get any better....