Which foods are genuinely dangerous and where they hide, a treat budget worked out for your pet's actual weight, and exactly who to ring if something's already been eaten.
It's intensely toxic to dogs, it turns up in products marketed as natural, and peanut butter is the single most common route. It's also in sugar-free gum, some baked goods and some medications.
Grapes and raisins, xylitol, lilies in cats, paracetamol in cats — these can be doing damage before anything visible happens. Waiting for symptoms is the wrong plan for exactly the things that matter most.
It's a visitor sharing garlic bread, a child dropping a raisin, a relative who thinks a bit of ham never hurt anyone. They're not careless — nobody told them, which is what the fridge card is for.
For most pets it's that treats have quietly become a quarter of the diet. No single snack caused it, and it does more cumulative harm than the toxic-food question most people are actually worried about.