There are lots of armatars I like. The snake one is pretty good. I also really like the one I have. There are too many good ones for me to pic a favorite.
My favorite armatar is the one that I'm using right now, the dolphin, and my second favorite would be the Orange Fox armatar, the one that john (the creator of EP) is currently using.
After all, deer did have a reputation of big, powerful spirits of the forest. Same reason the base body of a unicorn is that of a deer. Or I just like deer.