How do I know what foods are toxic to cats?

So, it is hard. There's actually a way longer list than most clients think. I would recommend going on ASPCA, they have a great toxin section and just definitely looking at different plants that you can have in your household that can be toxic to cats. One of the big ones I can think of would be lilies, and also just looking at some of the household common spices, such as garlic, what those can be toxic for as well. And just trying to familiarize yourself with them, maybe printing out a list, putting it on your fridge, just to make sure that we're not giving your kitty anything that's going to harm them.

I think the safest bet is to look into various sites. I know for sure the ASPCA has a site that is fairly comprehensive, as far as foods and perhaps even more specifically human foods that can be toxic or make your animals ill. So I would probably reference a list like that to find out for sure.

You might not know which foods are toxic to cats unless your cat has consumed something and experienced negative consequences, such as vomiting or diarrhea. However, some known harmful foods for cats include milk and dairy products (as cats are lactose intolerant), foods containing onion or garlic, grapes and raisins, avocado, and raw meat due to potential contamination from bacteria like E. coli or salmonella.