Just because a creature is furry and purrs, doesn't mean its more deserving of life than a cockroach. WHERE exactly was Scotty supposed to put the little menaces?
KIRK: "I *don't care what it takes*, I want them off my ship"
This little furry, purring creature in my lap right now has wiped out several species and is endangering others as we speak.
And hold on, so Cyrano Jones gets, effectively, a 23 year sentence for various transportation issues....but it's ok for the Enterprise crew bring them on board? Harsh. That's like sentencing that guy who sold the Gremlin.