Alcohol can be extremely hazardous to pets, as even small amounts of it can be toxic. When consumed by cats or dogs, it can cause neurological depression, low body temperature, low blood pressure, respiratory failure, and seizures. Beer poses an added threat- as hops, the plant used to brew beer, is also toxic to dogs. Hops can cause hops poisoning, which is characterized by fevers, restlessness, and excessive panting.