... I have examined several cases in which a grandmother has taken upon herself to suckle a grandchild... 
David Livingstone 「Missionary Travels and Researches in South Africa」
...They suckle their young at the breast, but some of them have pubicwarts resembling mammæ...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...Theyconveyed their two litters of puppies to one place, and while one ofthe mothers remained to suckle and take care of them, the other wentinto Mr...
Edward Jesse 「Anecdotes of Dogs」
...The bitch continued regularly to suckle, and reared them untilable to shift for themselves...
Edward Jesse 「Anecdotes of Dogs」
...Sometimes,moreover, the normal mammary glands are fully developed and can suckle in themale; but as a rule they are merely rudimentary organs without functions in themale...
Ernst Haeckel 「The Evolution of Man」
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