Before you worry too much about putting on those holiday pounds, consider this: We're not the only species with weight issues.
- Mammals that live near or with humans, from lab rats to pet pooches, have gotten fatter over recent decades.
- Fatter lab animals are the hardest to explain, since their diet is tightly controlled and well documented.
- Endocrine disruptors, pathogens or temperature changes might play a role and could also factor into human obesity.
Dogs, cats and other animals that live in close promixity to humans may be overfed. Click to enlarge this image.
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