No, a tick living on a dog is not an example of mutualism. Mutualism is a type of symbiotic relationship where both organisms benefit from the interaction. In the case of a tick and a dog, the tick benefits by feeding on the dog’s blood, which provides it with the nutrients it needs to survive and reproduce. However, the dog does not benefit from this relationship. In fact, the dog is harmed because the tick can cause irritation, transmit diseases, and lead to other health issues. Therefore, this relationship is considered parasitism, not mutualism.