According to the Gardiner list almost a quarter (176) of the 763 hieroglyphs of the Middle Kingdom consist of schematic pictures (pictograms) of animals or parts of animals, which refer to a total of 63 different animal species (partly in different postures), namely mammals (21 species), birds (23), amphibians and reptiles (7), fish (5) and invertebrates (7).

Alan Gardiner: Egyptian Grammar. Being an Introduction to the Study of Hieroglyphs, London 1927.