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This is the class blog for Phil 3377, Animal Rights, at SMU. Visit often to find material presented during class, including lecture notes, visuals, links to videos, etc.

10.06.2026

Animals as Food (factory farming)

Statistics
  • About 10 billion land animals die annually in food production in the US (USDA figures)
  • 218 million are killed in the US by hunters, in animal shelters, research, product testing, dissection, and fur farms -- 2% of total killed (2001 source)
  • About 80 billion land animals die annually worldwide
  • More numbers
Types of farming
  1. Factory farming--animals raised and processed in factory-like conditions--indoors, very little space, highly automated--most animal products in the US
  2. Reforms & humane farming (separate post)
Foods (below)
  • Pork, ham, bacon
  • Beef
  • Dairy
  • Chicken
  • Eggs
  • Turkey 
Sources
  • Industry videos, websites
  • Animal advocates
  • Peter Singer, Animal Liberation Now and other books



FACTORY FARMING

Pigs (for pork, ham, bacon)



Animal welfare issues
  1. crowding 
  2. tail-docking -- notice that the pigs in the pictures have no tails! 
  3. ammonia fumes, no straw
  4. short lives (life cycle of a market pig) -- 6 months (vs. 15-20 yrs)
  5. pregnancy
    • artificial insemination 
    • sow crates (for pregnant pigs) -- 114 days
    • farrowing crates (for birthing and lactating pigs) -- 21 days
    • sow impregnated again 

Gestation crates (wikipedia)

Farrowing crate -- By Alisha Vargas from Reno, NV, US - Piglets Nursing,
 CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=6498410

       



Beef Cattle


Animal welfare issues
  1. castration, branding, dehorning  
  2. live on range until 8 months old, BUT then sent to feedlot for several months
  3. at feedlot: fed corn diet, antibiotics, hormones to promote quick weight gain
More info:  Power Steer (Michael Pollan, NYT)




Dairy Cows


Animal welfare issues
    1. cows impregnated once a year (artificial insemination)
    2. separated from calf after a few weeks (see calf hutches here) 
    3. BST (increases milk production), mastitis
    4. What happens to the males? become veal, beef
    5. read about sexed semen





Broiler Chickens (for meat)



Animal welfare issues
    1. crowding (20,000 per barn) 
    2. debeaking, ammonia fumes
    3. collapsing under own weight
    4. very short lives (5-7 weeks vs. many years)  

poultry farm images



Farm sanctuary




Laying Hens (for eggs)




Issues
  1. crowding (each chicken has less space than a piece of typing paper) 
  2. debeaking
  3. male chicks immediately killed 
  4. short lives
Glass Walls (PETA) -- watch 1:51 - 3:30


Looking down into a dumpster - discarded male chicks



    Turkey 






    1. Bred to be huge, can't support weight
    2. Broad breasted, can't reproduce naturally
    3. Sores
    4. Crowding, fighting
    5. Method of killing after avian flu




    Slaughter 
        
            Slaughter of pigs, cattle (USDA regulated) -
    • Rough handling 
    • Transported on hot, crowded trucks
    • Animals shot in head with stun gun, lose consciousness (ideally)
    • Hoisted upside-down, throats slit, bled
    • Animals killed at a rate of 400 per hour
    • Temple Grandin reforms: more auditing, curved chute
    • Problem of error -- Nicholas Kristof article (NYT)

    Slaughter of chickens (minimally regulated)

      • thrown on trucks, long trip, no water
      • shackled upside down, dragged through electrified water, throats slit

    Animals as food (reforms & humane farming)

    Proposition 12 (California) - stipulates square feet, prohibits sale of products that don't comply, even if animals raised in other states, all laying hens cage-free

    Gestational stalls/crates 

    Gestational stalls banned (but not farrowing stalls)
    • States that now prohibit: Arizona, California, Colorado, Florida, Maine, Michigan, Ohio, Oregon and Rhode Island (wikipedia)
      • But what are the big pork-producing states? 
    • Smithfield farms (huge pork producers) phasing out


     _________________________


    HUMANE FARMING 

    Pigs

     


    Laying hens
    Multiple species
    Slaughter

      Availability, cost, labelling



      10.05.2026

      Higher and lower animals

      Preview

      1. Using animals as food -- RR18 food experiments
      2. Finish Kagan
      3. Animal ethics bracket

      _________________________


      Kagan recap

      Unitarianism -- there's just one moral status, humans and animals both have it (Regan, Singer)

      Hierarchy view -- there are many moral status, higher and lower

      • common sense
      Worrisome apparent implications that might make you doubt the hierarchy view

      1. Superior beings (eg. wizards, Greek gods, superheroes, amazing aliens) have higher moral status than normal humans
      2. Marginal cases have lower moral status than normal humans
      3. Due to normal variation, different humans have many different moral statuses
      Two ways Kagan can deal with these worrisome implications
      1. AVOID.  Argue that the alleged implication isn't really an implication of the hierarchy view
      2. LIVE WITH IT.  Argue that the implication is something you can live with; it's not actually worrisome.

      We'll see what he says about the three worrisome implications.

      _________________________

      Practical realism -- correct principles and categories are understandable and motivating

      Animal categories

      • Not a continuum
      • Not a hundred categories
      • He says 5-6
      Animal categories
      1. Humans -- full persons (defined as conscious, intelligent, self-aware, moral, etc.)
      2. Most intelligent, closest to personhood -- dolphins, whales, squid, great apes)
      3. Highly intelligent -- like dogs, pigs, parrots
      4. Midlevel -- rabbits, cows, squirrels
      5. Lower -- birds, fish, reptiles
      6. Lowest -- insects, spiders
      Moral status depends on species, but also on whether the individual is a normal member of the species
      1. Golden retriever who has taken a supervitamin and has the intelligence of a human--he's wroting poetry etc.
      2. Snake that acts like a cat
      _________________________

      Implication 2: marginal cases have low moral status
      Strategy:  avoid, live with it, or mixed?
      1. They are "modal persons" -- non-persons who could have been persons
      2. Practical realism -- correct principles and categories are motivating -- very low moral status for marginal cases wouldn't be motivating
        Kagan p. 14
      _________________________

      Implication 3: due to normal variation, humans will have lots of different moral statuses

      Strategy: avoid, live with it, or mixed?

      Kagan p. 15 
      _________________________

      Implication 1: superior beings would have higher moral status

      Strategy: avoid, live with it, or mixed?

      Kagan p. 7

      _________________________

      Why not ONE category for all humans and ONE for all animals?

      1. Humans: high status, so deontological rules apply, like "killing is always wrong"
      2. Animals: low status, so utilitarian/consquentialist rules apply, like "kill only when necessary to maximize happiness"


      Kagan p. 16

      _________________________


      Hierarchy and advocating for animals

      Kagan p. 6


      Kagan p. 18

      _________________________

      Animal ethics bracket

      Food choices

      Diet terminology
      1. Omnivore -- literally means "eat everything"
      2. Budding conscientious omnivore--switch to a few more-humane products (what should your priorities be?)
      3. Reducetarian--Meatless Mondays, "vegan before 6" 
      4. Conscientious omnivore--no factory farmed animal products 
      5. Pescatarian -- vegetarian with an exception for fish
      6. Vegetarian--mostly plant based, diet includes dairy and eggs, no meat
      7. Vegan/Vegetarian--plant based diet, no animal products
      Health

      10.02.2026

      Higher and lower animals

       Shelly Kagan, How to Count Animals: More or Less

      Some terminology

      1. Unitarian view: every being with moral status has the same moral status
      2. Hierarchy view: beings with moral status can have many different moral statuses (2, 3, 10, 20, innumerable)
      3. Utilitarian ethics; the right action maximizes total good
        • how to add hierarchy to Utilitarianism

      4. Deontological ethics: ethics consist of a set of duties (e.g. duty to keep promises, duty to not harm for fun)
      5. Practical realism: ethical principles and categories must be simple enough to be comprehensible and motivating
        • will come into play in second half of article
      _________________________


      Kagan's hierarchy view: based on capacities of different species
      • More capacities ---> higher moral status
      • Fewer capacities ---> lower moral status
      Which capacities count? He doesn't say. Which are plausibly relevant?
      1. capacity to fly
      2. capacity to run fast
      3. capacity to survive under water
      4. sentience
      5. capacity to cooperate
      6. capacity to be self-aware
      7. sense of fairness
      8. capacity to empathize
      9. sheer intelligence
      10. capacity to make art
      11. capacity to appreciate beauty
      12. capacity to migrate great distances

      _________________________


      Troubling implications of this capacity-based hierarchy view
      1. Hierarchy leads to implication X
      2. X is really bizarre and unacceptable
      3. So hierarchy must be rejected
      Three implications Kagan discusses:
      1. Superior beings might have higher moral status than us
      2. Marginal cases might have lower moral status than us
      3. Given normal variation, different normal people might have different moral statuses
      What is Kagan's response to each implications? He has two options:
      1. Hierarchy doesn't really lead to that
      2. That's not really so bizarre and unacceptable
      We'll see what he says in part 2 of the article


      Workbook--let's discuss superior beings 











      9.30.2026

      Wild sovereigns and animal denizens

       



      • equal basic rights (right to life and liberty)
      • different political categories
      • human categories --> animal categories
      Last time: citizens
      1. domesticated animals: cats, dogs, goats, donkeys, horses, cows, pigs, chickens
      2. see last time
      _________________________

      Liminal denizens 
      1. Humans: tourists, foreign students, temporary workers, illegal immigrants, opt-out citizens,  like Amish
      2. Animals: ducks, geese, rats, mice, squirrels, swallows, chimney swifts, feral cats, etc.
      3. Animal denizens seek human settlements, depend on us, but don't share a community with us
      4. Two principles that apply to human denizens (p. 14)
        • KEEP OUT: legit to have borders and laws about who enters; also legit to discourage entry
        • ACCOMMODATE: "sooner or later they acquire the right to stay" (p. 14)
      5. Application to liminal animal denizens
        • KEEP OUT: we can try to keep them out
        • ACCOMMODATE: "we need to regularize their status, and to accept and accommodate to their presence" (p. 14) 
      Animal liminal denizen examples

      MICE 
      • keep out: plug holes in walls to keep mice out, avoid open food, use humane traps and remove
      • accommodate: "why should we begrudge them some space in the cellar, or the garage or the garden shed? " (p. 15)

       

      CANADA GEESE

            "we can actively discourage geese from colonizing our parks and fields, although of
            course we can’t kill them or otherwise harm them" (p. 15)
          • video about methods
          • Migratory Bird Treaty Act
          • accept that they live in some areas

       


      FERAL CATS
      _________________________





      Foreigners in other countries ... wild animal sovereigns 
      1. Foreigners in other countries  
        • respect for sovereignty (e.g. the UK gentry)
        • we don't "manage" people in other countries
        • occasional assistance ok
      2. Wild animal sovereigns 
        • respect for sovereignty
        • we shouldn't "manage" wildlife
        • occasional assistance ok

       

      Wild animal sovereign examples
      STOPPING RUTTING ELK - NO!

      • we would stop dogs from fighting at a dog park, because they're members of our community
      • we should respect elk fighting because that's their way of life          

       



      STOPPING PREDATION - NO!

      • we stop our cats from killing birds, because the cats are members of our community
      • shouldn't stop wild animal predation 



      ONE-OFF ASSISTANCE

      • Nick and Nora at White Rock Lake -- last summer one of their 3 eaglets fledged and couldn't get back to the nest...the police got involved with protecting them 





      REGULAR ASSISTANCE 

      • Saving the pufflings...solves a problem that humans create -- light pollution
      • Habitat loss also human-caused ... solved with wildlife corridors
      Helping the puffins in the Westman Islands, Iceland

      EXCESSIVE ASSISTANCE 

      _________________________


      PREVIEW: Shelly Kagan, "For hierarchy in animal ethics"

      • D&K: political categories
      • Kagan: capacity categories

      9.28.2026

      Animal citizens





      Sue Donaldson & Will Kymlicka

      Animal rights debate
      • Do animals have basic rights like a right to life and liberty?
      • Longstanding debate...they are not contributing to it...they assume YES
      • Assuming ALL animals have basic rights, we need to understand the DIFFERENT rights and responsibilities of different animals
      Human rights vary by "political category"
      1. Citizens here (Canada, US, wherever) 
      2. Liminal denizens: tourists, foreign students, temporary workers, refugee claimants (all drawn here for different reasons)
      3. Foreigners in other countries
      They claim: animals fall into parallel "political categories"



      Note: they are NOT saying....
      1. human and animal citizens should have the same rights
      2. human liminal denizens and animal liminal denizens should have the same rights
      3. human foreigners and wild sovereigns should have the same rights
      _________________________


      Animal citizens (next part of article is about the wild sovereigns and liminal denizens)
      1. Why think of domesticated animals as citizens?
      2. Are all the cows, pigs, and chickens going to be citizens too? 
      3. What is involved in animal citizenship?
      p. 5


      Socialization
      • Animals have to be trained to live with each other and humans in a mixed community
      Public spaces -- outdoor

       Mixed communities that already exist

      Public spaces -- indoor





      Animal cafes (South Korea)

      _________________________


      Animal citizens should work, but not be exploited
      • contribute manure YES
      • goats or sheep
        mowing lawn YES


      _________________________

      Exam 1
      • Worth just 15% ... many great answers
      • If you want to do better next time: 
        • make better use of study guide and blog posts
        • do the readings... don't just find the thing the RR calls for and skip the rest of the reading
      • There's an exam key at the top of the Canvas home page

      9.25.2026

      Do animals have moral standing?




      Peter Carruthers, "Against the Moral Standing of Animals" (2011)

      1. Part 1 (sec 1-3):  contractualist argument ... animals have no moral standing
      2. Part 2 (sec 4-5): why is animal cruelty still wrong?

      Thought experiments
      1. Kids set a cat on fire for fun in a public place (p. 11)
      2. Astrid the Astronaut and her pet cat (p. 12)
      3. Astrid the Astronaut and her dead servant (p. 13)
      4. Lazy Jane the doctor 
      Why is cruelty and indifference wrong?
      1. Because of what is shows about you and your character (compare Indian animal ethics)
      2. Your cruelty will lead you to harm humans (compare Kant)
      3. Contractors would agree that cruelty is wrong

      _________________________


      Preview of Monday's reading -- to make more time for field trips 


      Sue Donaldson & Will Kymlicka, Zoopolis: A Political Theory of Animal Rights 

      • they are Canadian
      • they wrote this book in 2011
      • we're reading their precis of the book -- a short summary
      • "zoopolis" means (literally) animal city
      • animalism, but a different kind of animalism than we've seen before

      Individualistic animalism--our obligations to animals depend on each individual animal's "intrinsic moral standing" (D&K p. 1).
      1. Peter Singer--sentience, interests
      2. Tom Regan--being a subject of a life, rights
      Political animalilsm
      1. Intrinsic moral standing does matter
      2. but so does "political status" 
      3. both matter for both humans and animals



      What do they mean by political status?

      Passport control at DFW international terminal


      Picture people who get off a plane

      They all have  the same basic rights based on "intrinsic moral standing" (p. 1) – enshrined in Universal Declaration of Human Rights 
      1. right to life
      2. right to liberty
      3. we can't torture or enslave any of them
      But they have different rights based on "relationship to a particular political community" (p. 2)
      1. Citizens of the US
        • right to enter the US
        • right to work here
        • right to have their interests represented by government
        • right to vote
        • right to have access to public spaces (can go there, signs are in your language)
        • right to emergency health care

      2. In-betweens/Denizens: "tourists, foreign students, refugee claimants, business visitors or temporary workers" (p. 2). 
        • have all the basic rights based on "intrinsic moral standing" 
        • don't have all of the rights of citizens, but do have some

      3. Foreign Nationals--citizens of other countries, back in home country
        • have set of rights established in other nation
      _________________________


      D&K say animals are in parallel political categories 

      1. Animal Citizens -- domesticated animals living with us-- for example pets
      2. Animal Denizens  -- animals drawn to us but not living with us--squirrels, rats, mice, raccoons, ducks, geese, chimney swifts, swallows
      3. Animal wild sovereigns --  live independently in wilderness (inside our borders or outside)


      _________________________

      Next time: arguments, details, what it means to be an animal citizen