Why don't male mammals lactate?

  title={Why don't male mammals lactate?},
  author={Martin Daly},
  journal={Journal of theoretical biology},
  volume={78 3},
  • Martin Daly
  • Published 1979 in Journal of theoretical biology
Why has male lactation never evolved? This question is discussed with attention to (a) the physiological and ontogenetic modifications that such an evolutionary development would require, and (b) the reproductive strategies of monogamous mammals and the costs and benefits of extant forms of parental investment. Functional male lactation would require… CONTINUE READING