Never give acetaminophen to a cat or dog. The drug affect cats oxygen in the blood and it produces severe depression. It also produces abdominal pain in dogs. If not quickly eliminated from the body, just two extra-strength tablets in 24 hours will most likely kill a small pet. Clinical signs in cats develop within one or two hours and include excessive salivation, paw and facial swelling, depression, and ash-gray gums. In dogs watch for anorexia, vomiting, depression, and abdominal pain. High doses are usually fatal.

There are neurological poisons found in lawn and garden pesticides, insecticidal aerosols, dips and shampoos products. Signs of toxicity include apprehension, excessive salivation, urination, defecation, vomiting and diarrhea, tremors, seizures, hyper-excitability or depression and pinpoint pupils. If an animal has absorbed enough of any neurological toxin, sudden death may be the only sign.

Coumarins, most recognizable as D-Con, a rat and mouse poison, affect the ability of the blood to clot. Mice that consume the poisoned grain essentially bleed to death. Your pets will be affected the same way, and the severity of the symptoms often depends on the amount ingested. Cats that eat poisoned mice can also become ill if the levels of poison are high enough. If you find an empty box of rat poison bring your pet into the veterinarian immediately. Tell them about the recent exposure so that they can implement the proper monitoring protocols. Additionally, if you see labored breathing, anorexia, nosebleeds, bloody urine or feces and pinpoint hemorrhages on the gums, take your pet to the veterinarian immediately.