Food that are poisonous to cats?

Yes, full list here: http://cats.about.com/cs/catfood/a/humanfood.htm

But some cat foods are not good either and in long term can cause problems.

I can't really recommend feeding ANY dry food. Cats are designed to get their water from food. That's the way nature designed them, they have low thirst drive. When fed dry, they won't drink enough to compensate for the lack of moisture. They will only consume about 50% of the water they should be having. This can lead to kidney disease, UTI, crystals, blockage, renal failure and more.

Free feeding also leads to obesity. And the fact that dry food is over-processed means, that most of it’s little nutrition has been already destroyed, leaving almost no nutrients for your cat. It needs to eat more to meet it’s needs, and in the process consumes more calories from the fillers.

Btw wetting the dry food will not help. There’s bacteria on the kibble and the water would just allow it to grow.

The only way to give the cat it's natural hydration is to feed it wet food only.

But some wet foods are junk too. That goes for most commercial foods. Just like the dry, they are often made with cheap fillers such as corn, wheat, soy, rice etc. These are not a part of cat's natural diet (it’s an obligate carnivore – it eats meat!) and they are not designed to digest it. Grain is carbohydrate which the cats can't process and it turns into blood sugar and fat, causing diabetes and obesity. In the wild, where cats only hunt for meat, diabetes and obesity are unheard of. It's us who cause these by feeding a species inappropriate food.

The healthiest food to feed apart from raw feeding is grain-free wet food with no by-product. Learn to read the label and understand the ingredients. Some good brands are Wellness CORE, EVO, Merrick, Nature's Variety, Blue Buffalo Wilderness and more. These will give your cat the proper hydration and nutrition it's designed to get and it will be strong and healthy.

If you switch it's diet, do it gradually, by mixing the current food with the new one over couple of weeks until there's only the new. This will prevent diarrhea and upset stomach.

You will probably get a lot of different answers, so google feline nutrition or look at the links below, and do the research for yourself. I personally wasn't able to find one reliable source (besides the pet food industry) that would say grain is beneficial for cats or that dry is beneficial for them.

More on cat nutrition below,

Good luck!

Generally, anything that's toxic to a dog is also toxic for a cat.

http://cats.about.com/cs/catfood/a/humanfood.htm & here's another good link about toxic plants just FYI:

http://www.aspca.org/pet-care/poison-control/plant...

onions onions and any member of the onion kin are fairly poisonous to cats. please save those away out of your helpful toddler. additionally, based on the "milk" remark... cats could have milk, they're only lactose illiberal. i do no longer think of it is going to unavoidably kill them, yet only lead them to ill. i like to grant my cats Lactaid, that's milk minus the lactose (for the reason that I easily have it interior the refrigerator for my own use besides)

I just ran into a list last night on the computer, look it up, there's more than I even thought.

I find your search for this knowledge unsettling.