M

macaque

maladaptive

malnutrition

marginal cases (D. Dombrowski)

marmoset

mastitis

maternal behavior

Maynard-Smith, John

Mayr, Ernst

measuring welfare

meat

meat, climate and

meat, masculinity and

medical research with animals

Midgley, Mary

milking

milk production

Mill, John Stuart

mink

mirror neurons

misothery

monkey

morbitidy

mouse

moral status of non-human animals

mulesing

museums and representation of animals

must

mutilate