Does the word "food pellet" is referring a "food tray"? Which word is being used more often?
Native speaker’s answer
Rebecca
"Food pellet" here refers to compact pieces of food that are given to them inside the cage. The reason he uses the word "food pellet" in this case is because they are inside a hamster cage and are being treated like hamsters. "Food pellet" is the term used to refer to the compact food given to small pets like hamsters in a cage.