Days 11 and 12: Gorilla and Goat

So it started out as art every day month. Then it became art almost every day month. Then it became 30 pictures in 30 days. Now I'm back to art most days (most being more than 15). Hey it's been a good experience though.
Numbers 11 and 12 are sketches from some photos I took a few years ago at the Atlanta Zoo. The one above is a gorilla. The one below is a goat from the petting zoo section.

Both are done in ink. Recently I bought How to Draw Animals by Jack Hamm. It's a small book but it's packed with good information. A lot of space is spent on structure and comparing the structure of various animals. Heads, feet, eyes, ears and noses are compared. It discusses how to use a house cat as a model for a big cat. I've found it very helpful.