My Bad. It was some other Folks and this Lord Stern Guy quoted them:
Save the planet: eat a dog? | Stuff.co.nz
The couple has assessed the carbon emissions created by popular pets, taking into
account the ingredients of pet food and the land needed to create them.
"If you have a German shepherd or similar-sized dog, for example, its impact every
year is exactly the same as driving a large car around," Brenda Vale said.
"A lot of people worry about having SUVs but they don't worry about having
Alsatians and what we are saying is, well, maybe you should be because the
environmental impact ... is comparable."
In a study published in New Scientist, they calculated a medium dog eats 164
kilograms of meat and 95 kg of cereals every year. It takes 43.3 square meters of
land to produce 1 kg of chicken a year. This means it takes 0.84 hectares to feed
They compared this with the footprint of a Toyota Land Cruiser, driven 10,000 km
a year, which uses 55.1 gigajoules (the energy used to build and fuel it). One
hectare of land can produce 135 gigajoules a year, which means the vehicle's eco-
footprint is 0.41 ha – less than half of the dog's.
They found cats have an eco-footprint of 0.15 ha – slightly less than a Volkswagen
Golf. Hamsters have a footprint of 0.014 ha – keeping two of them is equivalent to
owning a plasma TV.