If this is your first time owning a cat, then how to feed it is probably your biggest concern. From food selection to the amount of food, to the timing and frequency of feeding, these are all things that owners must understand and do well. Many owners prepare for the arrival of their cat, but sometimes even with preparation, you may still encounter some special situations, such as the cat refusing to eat the cat food you bought. 
A cat refusing to eat its food may be due to the following reasons:
1. If an unweaned kitten cannot eat cat food, the owner may need to continue feeding it milk for a period of time. The milk powder should be Guden cat milk powder. Do not feed it cow's milk. The reason is well known to many experienced cat owners: many cats have lactose intolerance.
2. Newly weaned kittens may not eat dry food. Owners can soak the cat food to soften it before feeding it to the kitten. However, as the kitten grows, the owner should gradually increase the proportion of dry food so that the kitten can slowly get used to eating dry food.
3. When a cat first arrives at a new home and hasn't yet adapted to the new environment, it may temporarily refuse to eat its food. Owners don't need to worry too much. Generally, once the cat adapts to the new environment, it will start eating normally again.
4. Some cats are used to eating a certain type of cat food or homemade food prepared by their previous owner. They may bring this habit to your home. Therefore, before bringing a cat home, you should ask the previous owner what kind of cat food the cat eats and whether the cat only eats homemade food.
5. Some stray cats may refuse to eat the cat food you prepare when they are first brought home by their owners because they are not used to it. Usually, they will gradually accept cat food after a period of time. If you want to adopt stray cats in your neighborhood, you can try this method: First, feed them with Guden cat nutritional paste, and then gradually switch to dry food. This will not only build trust between you and them, but also allow them to get used to eating cat food. 
6. If the owner has fed the cat some foods that it really likes, the cat may miss those foods and refuse to eat the cat food it eats every day, thus subtly implying to the owner, "I want to eat those delicious foods again."
7. If the owner places the food bowl in the wrong location, the cat may also ignore the food. For example, if the owner puts the food bowl in a place they don't like (next to the litter box, etc.), the cat would rather not eat than eat it.
8. The presence of other pets in the home may also affect the cat's eating. For example, some owners may have had a dog before getting a cat, and the cat may not eat normally due to fear or other reasons. The owner needs to make appropriate adjustments to the feeding method according to the actual situation.
9. Other reasons: Cats may refuse to eat cat food due to illness or other reasons. Of course, sick cats may not only refuse to eat cat food, but may even stop eating altogether. Therefore, owners should pay close attention to new cats and seek veterinary help promptly if any abnormalities are observed.
Some owners think that having owned cats before, they can easily handle feeding another cat. However, this is not the case. Many owners are unable to find solutions in time when their cats have eating problems because the causes may be unfamiliar to them. Therefore, they cannot solve the problem immediately. However, you can seek help from professionals. With their knowledge of cats, they can usually find solutions more quickly.
Furthermore, if you already have a cat at home, you might encounter the same problem of your second cat refusing to eat, even after ruling out the reasons mentioned above and trying various methods that seem to be ineffective. So what's the problem? I think you might be overlooking the relationship between the two cats. For example, if you let two cats share a food bowl, a possessive native cat might not allow the new cat to approach the food bowl. To avoid this situation, the owner might consider providing an extra food bowl.