"Mish-mash" implies thoughtlessness, and that's not something I can accuse myself of, in this case at least. 

Anthropocentrism has been a commonplace in anthropological thought for far longer than 3 millennia, not universal, fortunately, but certainly dominant in our classical and biblical traditions. Also fortunately, the essence of philosophy as the asking of essential questions means that moral evolution can take place, and in fact more and more serious thinkers are engaged in rethinking human-animal relations. I particularly like those who pursue what they call "Critical animal studies."

As for animals and "will," it's your requirements that animals must show they "will" as human beings "will," before you're willing to afford them moral regard, that is the unwarranted anthropomorphism here.