On the loose

A limerick:

Albert Einstein's our class pet

A meaner hamster you can't really get

He isn't a chum

He bit Conradi's thumb

And now out of the cage he has fled!

EGAD!! He's loose!

So far, 3 fish, 3 tadpoles, and 3 frogs have died under our care. The only survivors (unless we find Einstein alive) are our caterpillars tucked into their coccoons. Let's hope the butterflies make it out fine.