A Chemical Solution

Well they cloned a Tassie tiger from a pickled tiger pup,
and now they've got a tiger with a taste for 7up.
It dosn't mind a gherkin, finds cocktail onions nice,
but it wouldn't eat a rabbit - or even little mice.
So Tassie farmer's chooks are safe, and so are all their sheep
from the tragic lab-born tiger. It's enough to make you weep.