Humans and cats have different body structures and therefore different nutritional needs. Cats are carnivores and have a high protein requirement. In a cat's nutritional needs, protein should make up 35%, fat 20%, and carbohydrates the remaining 45%.
In contrast, the nutritional components required by humans consist of only 14% fat, 18% protein, and 68% carbohydrates. Human food contains a higher proportion of carbohydrates, and cats will suffer from malnutrition if they eat it long-term.
Some foods that we find delicious can be life-threatening for cats. Therefore, never feed cats human food.
1. These foods are "acute poisons"!
1. Chocolate
Chocolate is one of the most beloved desserts, but it is extremely dangerous for cats. Chocolate contains compounds such as theobromine and caffeine, and excessive intake can cause acute poisoning in cats. Symptoms of poisoning in cats include vomiting, diarrhea, thirst, rapid heartbeat, and tremors. It can severely damage a cat's digestive tract, nervous system, and heart, and in severe cases, lead to death.
2. Onions, chives, scallions, and garlic, etc.
Onions, leeks, scallions, and garlic are all sulfite plants. The compounds in them can damage a cat's red blood cells, causing anemia, diarrhea, hematuria, vomiting, and fever. In the most severe cases, it can lead to the cat's death.
Although most cat owners don't actively feed them these foods, it's necessary to prevent cats from accidentally ingesting them while playing. In addition, cats should not eat any onion-type vegetables, and even meat with onions should not be fed to them.
3. Grapes and raisins
Grapes and raisins are a popular snack, but they are toxic to cats. While the exact nature of the toxin is currently unknown, ingesting grapes or raisins can cause kidney failure and death in cats.
4. Coffee and tea
Coffee and tea contain stimulants such as caffeine and theophylline, which can stimulate a cat's central nervous system, causing symptoms such as rapid heartbeat, shortness of breath, and thirst. In severe cases, cats may experience cardiac and neurological abnormalities. Therefore, cat owners should avoid giving their cats coffee and tea.
5. Alcohol
Alcohol is a common beverage for humans, but it is toxic to cats. Even small amounts of alcohol can be very dangerous for cats. Excessive intake can damage a cat's brain and body cells, causing vomiting, diarrhea, difficulty breathing, and neurological abnormalities. In severe cases, it can lead to coma or even death. Therefore, cat owners should never give their cats alcohol.
6. Fish bones
Cats don't actually like eating too many bones. Owners shouldn't assume cats love food and give them leftover fish bones, as these can be fatal to them. Eating too many fish bones can easily cause internal bleeding and other problems for cats, so it's best to avoid feeding them fish bones! 
Second, these foods are "slow poisons"!
1. All snacks eaten by humans
Human snacks are generally high in oil, salt, and sugar, along with various unknown additives and seasonings, all of which are harmful to cats. Although these foods may not cause immediate harm to a cat's body (and even if there is harm, it may not be visible to the naked eye), over time, they severely strain a cat's organs, easily leading to kidney disease and diabetes.
2. Shrimp, crab, squid, octopus, shellfish, etc.
Cats may be allergic to octopus and squid. These seafood products often cause them indigestion and may even lead to acute or chronic gastroenteritis.
Long-term consumption of shrimp, crab, and other similar foods can hinder the absorption of vitamin B1 in cats. When cats are deficient in vitamin B1, it can cause decreased appetite, vomiting, convulsions, unsteady gait, and even paralysis of the hind legs.
Third, these foods should be fed with caution!
1. Liver
Cats that eat animal liver regularly are prone to calcium deficiency, which can lead to walking difficulties. Furthermore, liver is rich in vitamin A, and excessive intake can cause abnormal bone development.
It's best not to feed cats liver and carrots at the same time, as this can lead to vitamin A poisoning.
2. Raw meat and bones
Some cat owners want to try feeding their cats raw meat and bones, but this is very risky. Raw meat and fish may contain large amounts of bacteria and parasites, such as Salmonella and Toxoplasma gondii, which are extremely harmful to a cat's health. Eating raw meat and fish can lead to serious illnesses in cats, such as gastroenteritis and hepatitis.
It's safer to feed cats cooked meat and eggs. You can cook chicken breast or fish for your cat 1-2 times a week (without adding any oil, salt, or seasoning). You can also give them a small amount of cooked egg yolk, but not too much. If your cat really likes egg yolks, you can use quail egg yolks instead.
3. Milk
Some cats enjoy drinking milk, but most are lactose intolerant and will experience diarrhea after drinking it. If your cat really likes milk, it's recommended to choose lactose-free milk. Note that milk does not meet all of a cat's nutritional needs and cannot replace their primary food source.
These foods can all negatively impact a cat's health, so it's crucial to avoid feeding them these prohibited foods. If a cat accidentally ingests harmful food, seek veterinary attention immediately. Furthermore, each cat's physical condition and food tolerance differ, so it's best to consult a veterinarian when choosing a diet for your cat.
