Answer:
Mutualism is a symbiotic relationship in which both species benefit. Parasitism is a symbiotic relationship in which one species (the parasite) benefits while the other species (the host) is harmed. Fleas or ticks that live on dogs and cats are parasites. They are living off of the blood of the host animal. Lice are another type of parasite. They live off of the blood of the host animal, harming the host. An example of a mutualistic relationship is that of the oxpecker (a kind of bird) and the rhinoceros or zebra. Oxpeckers land on rhinos or zebras and eat ticks and other parasites that live on their skin. This allows both parties to benefit off each other because while the bird gets food, the rhinoceros gets clean.