Are there any detailed studies of the carbon footprint of pet food production?
There are plenty of articles asserting that meat in cat and dog food is a major source of carbon emissions (e.g. from Forbes), but they appear to refer to meat produced for human consumption. Pet food can be from a variety of sources, such as offal and/or animals that have reached the end of their life producing milk, wool or eggs (e.g. from the 2ndChance web site), so using the emissions figures calculated from meat for human consumption could be very misleading.