The highest capacity vehicle in the MUNI fleet has to be a two-car light rail vehicle. Capacity 436 people. The average weight of a person is 185 pounds. So we're looking at 80,660 pounds per rush hour train.
The lightest dog is a 1.4 pound Chihuahua named Ducky.
So at the absolute outside with no other passengers the limit is 57,614 dogs. I'm going to have to make some stickers...
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