1. Statista (2023, November 15). Pet food Market Worldwide—Statistics & Facts. Available online: https://www.statista.com/topics/7429/pet-food-market-worldwide/#topicOverview.
2. The European Pet Food Industry, FEDIAF (2023, November 15). European Statistics 2022. Available online: https://europeanpetfood.org/about/statistics/.
3. The European Pet Food Industry, FEDIAF (2023, November 15). The History of Pet Food Manufacturing. Available online: https://europeanpetfood.org/pet-food-facts/fact-sheets/quality-and-safety/history-of-pet-food-manufacturing/.
4. The European Pet Food Industry, FEDIAF (2023, November 15). Nutritional Needs of Cats and Dogs. Available online: https://europeanpetfood.org/pet-food-facts/fact-sheets/nutrition/nutritional-needs-of-cats-and-dogs/.
5. Purina Institute (2023, November 20). What Is the Difference Between Dry, Semi-Moist and Wet Pet Foods?. Available online: https://www.purinainstitute.com/centresquare/understanding-pet-food/difference-between-dry-semi-moist-and-wet-pet-foods.