because the teat of the dam being sufficient to nourish the young, till it be able to feed on grass, the male only begets, but concerns not himself for the female or young, to whose sustenance he can contribute nothing.
Harraparien artean, ordea, elkarketak denbora gehiago irauten du, emea ez baita gai berak ehizatzen duenarekin bakarrik bere ondorengo ugariak elikatu eta sostengatzeko.