div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imagea href=https:reader043vdocumentsusreader043viewer2022020522575067ce1a28ab0f07ad3b42html5page1jpg target=_blank img data-url=bull-dog-calf-in-african-cattlehtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: ‘Bull-Dog’ Calf in African Cattle loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsusreader043viewer2022020522575067ce1a28ab0f07ad3b42html5thumbnails1jpg width=140 height=200 adivp© 1933 Nature Publishing Grouppdiv