Most pet owners know that antifreeze and rat poison are dangerous. But many pet emergencies are caused by items people use every single day — things sitting on kitchen counters, in bathroom cabinets, or growing in the backyard. At Swan Harbor Pet Urgent Care, we regularly treat dogs and cats exposed to common household toxins. Knowing what to watch for can help you prevent a scary (and sometimes life-threatening) situation. Here are some of the most common hidden hazards. 1.