As a human Magenta is gorgeous and smart and Zach loves her wonderfully sharp commentary. But as a guinea pig she s soft and adorable and she ll sit on his lap and let him spend ages stroking her fur.
She ll sit quietly and he can say whatever he wants without worrying until he runs out of words. If she were human, or if she spoke back, he d still keep babbling away forever. Instead he can be calm and just touch her.
When they re a boy and a guinea pig they can have a chance to relax.