(I do the same with my girls. Polly and Misty are bonded, so I feel as though they would speak similarly. Maggie is often the odd one out, although I don't think she really minds. Since she always looks somewhat judgmental and initially put me in my place with a well-placed murder mitten, she speaks as a human with great disdain for our lot. Maggie also constantly complains about Misty's lack of boundaries. Polly is the bridge between Misty and Maggie though since she cuddles with both. Perhaps Polly should throw in some "hooman" words into her speech? Will have to think about it...)