Don't leave medications within reach of pets. If you drop a pill, pick it up before your pet finds it and eats it. Always check with a veterinarian before medicating pets. Instead of treating your pet, you could be poisoning it. Don't allow your dog to eat chocolate.
Chocolate contains an ingredient called theobromine, which acts very much like caffeine.
Too much theobromine can cause vomiting, diarrhea, nervousness, restlessness, excitement, tremors, seizures, and even coma. Don't feed your pets alcohol or illicit drugs. It is dangerous. Many pets have had to be treated at an emergency vet clinic because of the folly of their owners. If you live in a tick-infested area, check your pets frequently, especially if they have been out for an extended period of time.