Take the indirect water cost of feeding the dog. Per dollar of pet food, 140 gallons (530 liters) of water are used indirectly in the production process, for a total of 200 gallons (757 liters). Water is needed to produce the meat and cereals that go into making the pet food, said study co-author Michael Blackhurst, whose research was published in February in the journal Environmental Science & Technology.
The exploitation of animals for human needs is bad and may kill us
