HORSE AND ASS HYBRIDS. 



671 



" Domestic animals, such as cats and dogs, have been 

 known to suckle young of other species, even when they 

 had no progeny of their own ; and corresponding instances 

 among women who have fostered orphan children are on 

 record in the physiological journals. Nay, more than 

 this, a case is related by Humboldt of a man who became 

 the wet nurse to an infant child. .... Accounts 

 not unfrequently appear in the American and other papers, 



Pholo till [M. H. H. 



Fig. 632. — Hybrid by a Burchell's zebra out of a skewbald Iceland mare. 



of mules which are seen suckling young, and the conclusion 

 is at once arrived at that these young are the offspring 

 of the animals that are supporting them, but it may be 

 regarded as perfectly certain that they are merely adopted 

 foals, which by their endeavours to suck female mules have 

 developed in the latter abnormal lactation " {Tegetmeier 

 and Sutherland). 



The coat, mane, tail, feet, and voice are more or less 



