For this Lab I used reference photos from this Flickr gallery here
Each drawing was done on white card stock. For the first monkey I used a PaperMate felt pen, Cretacolor Aquamonolith crayons in perm. red dark, orange, cad. citron, and ultramarine. I touched a few places with a moistened brush to blend the colors.
For the baboon I used a Pilot V Razor Point extra fine pen, Caran d'Ache Neocolor II watersoluble crayon in Emerald Green, and soft pastel in pink and lavender. The Pilot V pen is watersoluble and makes interesting shadows when it mixes with the watersoluble crayons and pastels.
Next Lab is Imaginary Creatures.