Features:

- clean topology (quads only)

- scaled to animals' real size (using Blender's metric system)

- symmetrical with the origin point at the center of the grid floor (ready for mirroring)

- even quads distribution

- uniform number of loop cuts in each model (8 for ears, legs, eye sockets, and tails, 24 for a body)

- detailed noses/beaks and limbs (paws, hooves, legs, claws)

- low polygon count (good for games and retopologizing after sculpting)

- simple color materials applied to every model (Cycles and Blender Internal materials available)