New Delhi, Nov 21 (ANI): A study of Brazilian pets suggest that cat and dog owners could significantly reduce the environmental impact of their pets' diets by feeding them dry food (consisting of kibble or biscuits) rather than wet food with higher water content. The findings, published in Scientific Reports, highlight how pet owners can feed their animals more sustainably while still providing them with sufficient nutrients and calories. The population of pet cats and dogs is growing worldwide. Currently, the USA is estimated to have 76.8 million dogs and 58.4 million cats, while Brazil has 52.2 million dogs and China has 53.1 million cats. However, the environmental impact of pet diets is unclear. The authors investigated commercial wet diets and dry diets found on the websites of three major Brazilian pet food retailers. These were also compared to homemade diets - either food produced by companies, or food cooked by owners at home using recipes provided by companies. Additionally, the authors assessed the nutritional and calorific makeup of the different diets.