... 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」
...When, through a desire to get as many specimens of a particular breed aspossible, a delicate bitch is allowed to suckle all the members of a heavylitter, fits are the too probable consequence...
Dinks, Mayhew, and Hutchinson 「The Dog」
...Bats, or Cheiroptera, are particularly distinguished from all othercreatures which suckle their young, by possessing the power of flight...
R. Lee 「Anecdotes of the Habits and Instinct of Animals」
...His large breasts gave plentyof milk; he was employed as “male nurse” to suckle a new-borninfant whose mother had died at birth...
Ernst Haeckel 「The Evolution of Man」
...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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