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Comment by fs_tab | Hacker News Reader

Related, the verified record holders for lowest and highest adult weights are (by species):

Canis familiaris (Dogs): ~371x difference

      0.45 kg |    1.   lb | Milly       | Chihuahua
    167.   kg |  368.17 lb | Benedictine | Saint Bernard

Felis catus (House cats): ~31x difference

      0.68 kg |    1.50 lb | Tinker Toy  | Blue Point Himalayan
     21.23 kg |   46.8  lb | Himmy       | Tabby

Homo sapiens (Modern humans): ~298x difference

      2.13 kg |    4.7  lb | Lucia Zarate
    635.   kg | 1400.   lb | Jon Brower Minnoch

Edit: Formatting

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Given what I know about humans, Lucia was obviously a newborn. I'm less confident when it comes to dogs so I don't know if Milly was a baby or not. Either way, doesn't including babies throw things off a bit?

I feel like the the difference between the smallest and largest adult dog is much bigger than the same ratio in people, unless there is a person with very extreme dwarfism or something.

This is Lucia Zarate's adult weight, recorded when she was 17. She had Majewski osteodysplastic primordial dwarfism type II, which is hereditary.

Wow, I stand corrected. I did not think that was physically possible for a person.

Neither of the people on either side of that scale are what anyone would call "healthy". A 4 lb dog can be completely normal and healthy, so too a 200 lb mastiff. A 2-lb person will not be healthy, nor any 1000+lb person. Those are nano-percentage outliers.

Fyi, the wikipedia entry for Lucia Zarate cites larger numbers, as much as 14 lbs.

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