The phrase "curiosity killed the cat" is a proverb used to warn of the dangers of unnecessary investigation or experimentation. It implies that being curious can sometimes lead to danger or misfortune. However, the phrase is not meant to be taken literally, and curiosity itself does not actually kill cats. In fact, cats are more likely to be killed by common household items such as tuna, grapes and raisins, chocolate, lilies, alcohol, acetaminophen, yarn, and aloe. If you suspect that your cat has been poisoned, it is important to take them to the vet immediately or contact the ASPCA Animal Poison Control Center at 888-426-4435.