Why are pigs (and some other animals) not milked?

Geahča maid

• My pigs are ok, why change? – animal welfare accounts of pig farmers
  Dahkki: R. Albernaz-Gonçalves, et al.
  Almmustuhtton: (2021-03-01)
• Why is motilin active in some studies with mice, rats, and guinea pigs, but not in others? Implications for functional variability among rodents
  Dahkki: Gareth J. Sanger
  Almmustuhtton: (2022-04-01)
• GOOD TO GREAT: WHY SOME COMPANIES MAKE THE LEAP…AND SOME OTHERS DON’T
  Dahkki: Jim Collins, et al.
  Almmustuhtton: (2012-12-01)
• Why pandas do handstands : and other curious truths about animals /
  Dahkki: 291794 Brown, Augustus
  Almmustuhtton: (2006)
• Why are coronavirus rates rising in some areas of England and not others
  Dahkki: Dorling, D, et al.
  Almmustuhtton: (2020)