"Hmmm, your guess is as god as mine," Starscream smirks, evidently amused by Rodimus' reaction. "Some sort of bizarre Earth creature I came across. They were simple crystals, then they turned into... well, smaller versions of those. They've been steadily growing ever since."

He strides over to the cage containing the one that resembles an extremely ill tempered, tall, six legged crocodile. "Steadily growing to the point where, as you can see, I keep having to increase the size of their enclosures. They need to be moved again, to the hold down the hall from here. Have fun."