Various different kinds of rat poisons may affect humans by causing nosebleeds, bleeding gums, bloody urine, bloody diarrhea, loss of hair, bruising and lethargy, according About.com. Individuals who believe they have in... More »

The side effects of rat poison or rodenticide depends on the type of poison, but could include nausea, vomiting, chest pain, diarrhea, respiratory failure and unexplained bleeding. Both humans and pets can suffer negativ... More »

Although designed to kill rats, any mammal is at risk if D-con is ingested, with side effects including weakness, general lethargy, breathing difficulties, lack of appetite and blood in the urine. Pets such as dogs and c... More »

The potential side effects of blood thinners include nosebleeds, prolonged bleeding after a cut, heavy menstrual periods, bleeding gums and bloody urine, according to Healthline. Blood thinners also cause dizziness, hair... More »

Although designed to kill rats, any mammal is at risk if D-con is ingested, with side effects including weakness, general lethargy, breathing difficulties, lack of appetite and blood in the urine. Pets such as dogs and c... More »

Some signs that a pet, such as a dog or cat, is sick are lethargy, loss of appetite, changes in mood, vomiting, diarrhea, increased thirst, coughing and urination problems, notes WebMD. Some other symptoms to look out fo... More »

Symptoms vary based on illness, but vomiting, diarrhea, lack of appetite, lethargy, increased or infrequent urination, coughing, hair loss, loss of mobility, or any combination thereof can all indicate illness in a dog. ... More »