Petsolino is reader-supported blog. If you buy something through our posts, we may get a small commission. Read more here.

Can Cats Eat Onions?

Cats are some of the most popular pets around the globe. They have a long history living with humans, as well as dogs and some other animals. They have been worshiped for millenniums and even considered deities. There are many beliefs and stories about their supernatural powers and wits. Cats are often considered magical and spiritual beings. In some countries they are believed to bring good fortune and bad luck in others. Whatever the truth is, cats are amazing beings, wonderful pets and cute cuddly friends to many people.

They can be both dear and cuddly and quite moody. A cat won’t allow you to touch it or knead it if it doesn’t feel doing that. They are intelligent, skillful and independent, but they can also be deeply connected with their owners. Just as dogs, cats can also feel sad and lonely, happy and joyful. If you approach is right way, you certainly make a loyal and devoted friend for life. Never neglect it or leave it alone for long periods of time. Cats used to their owners could be really sad and even depressed when their humans are away.

If you want a healthy, satisfied and beautiful feline, you need to get well informed on its individual needs. Different cat breeds require different way of grooming and such, but all cats have the same basic needs. You need to provide it space enough to run around and play, a good, cuddly corner to rest, regular medical care and proper, well balanced nutrition.

Nutrition for beautiful felines

Those amazing, elegant animals are natural born and ruthless hunters. To put it simply, they eat meat and they don’t need a lot of other ingredients on their menu. Proteins of animal origin are the very basis of a good, balanced cat’s diet plan, and this includes seafood like sardines. Meat food provides them all the essential nutrients for healthy growth and development. It supplies their body with energy, makes their eyes bright and their fur shiny, not to mention it is important for their blood, all tissues, nerves and other.

You can feed your cat homemade and purchased food. Ready made cat food is often recommended as the best option. Cats that get used to it are totally happy and satisfied and they rarely seek for any change of their nutrition. They could sometimes get bored with some food, so you can consider changing it. However, canned, vacuumed and dry cat food is completely satisfying. It is formulated to meet every cat’s individual needs. You should seek for an expert’s advice and determine which product is the best for your beautiful feline.

On the other hand, some homemade food could also be good. You can also use purchased food as a base and treat it with some well cooked meat once in a while. Always choose only high quality products and be sure it is well prepared. Don’t add any spices, salt, dips and such. Cats don’t need them at all and they could be harmful for their health.

Dangerous onions

Cats are not used to eat any vegetables, but it might happen they try to taste it. There are some bizarre cases of cats that actually like vegetables, even spicy ones as onions. However, they are strictly to be avoided. There are no onion benefits for cats. On the contrary, onions can seriously damage your cat’s health and you surely don’t wish for that.

Onion and garlic belong to Allium familly of plants. Allium vegetables are quite toxic both to cats and dogs. Cats are especially susceptible to its toxicity, because their digestive system and blood are quite different than dogs’. They can hardly tolerate onions’ toxic composition. Eating onions could lead to really serious anemia with a fatal end.  If you notice some of the following symptoms, it might be your cat has eaten some onions or garlic. Those include vomiting, diarrhea, disorientation, lack of muscle coordination, weakness, lack of activity etc. If your cat experiences some of those, please see a vet immediately!

The thing with onions is that their composition and toxicity level very badly affect cat’s blood cells. They permanently damage them, so cat’s organism faces great difficulties transporting oxygen to its kidneys, brain, muscles and other organs. A cat’s heart needs to beat faster, which eventually leads to heart failure. Seriously poisoned anemic cat must get a blood transfusion in order to stay alive. So, enjoy your onions and never even consider sharing it with your cat.

The good side of the story is that your cat most likely won’t taste onions at all. Onions are not their natural food and they are really spicy.

On the other hand, cats are extremely picky animals and they are not likely to devour everything put in front of their noses, as a dog might do. As a good cat parent, you might also want to check out others that can also cause harm to your pets, such as watermelons and other fruits and vegetables.