Noelle T. answered 06/11/19
Multi-media Drawing Instructor
I don't know about any guides for anthropomorphia, however there are a lot of really excellent books on animal drawing that could point you in the right direction. The tricky thing about anthropomorphia is that it's based off of either multiple animals or animals and humans, so to draw it convincingly you have to have a good understanding of the anatomy. I recommend Animal Anatomy For Artists by Eliot Goldfinger and Drawing Animals by Hugh Laidman, they're great resources on developing animal drawing skill. I hope this helps!