This is a terrific old set of 9 cookie cutters in aluminum, probably from the 1930s. They include: bird, chick, bunny rabbit, 2 horses, lion, butterfly, and 2 flowers.
Chick measures 4.75 across the widest point, 4 inches tall across the tallest point, bunny measures 4.25 inches across the widest point, 3 inches across the tallest point, bird is about 4 by 2 inches, horses and lion are about 4 by 3 inches, butterfly is about 2 by 2 inches, and flowers are about 2.5 by 2.5 inches.
In good condition, could be used, except the bird has some finish loss.
I found my information from the Collector's Weekly website.