However, there are some exceptions concerning shape in the artiodactyl order ( even-toed ungulates including cattle, deer, and their relatives ), which displays a wide variety of bizarre red blood cell morphologies : small and highly ovaloid cells in llamas and camels ( family Camelidae ), tiny spherical cells in mouse deer ( family Tragulidae ), and cells which assume fusiform, lanceolate, crescentic, and irregularly polygonal and other angular forms in red deer and wapiti ( family Cervidae ).
