Toxoplasmosis is an infection caused by the Toxoplasma gondii (T. gondii) parasite. It is one of the most common parasitic diseases and is known to affect nearly all warm-blooded animals and humans, but cats are the primary living host. This parasite completes its life cycle in cats, and they are the only mammals in which this parasite is passed through the feces and into the environment as part of the life cycle. However, contact with raw meat and unwashed produce is also a very significant and well known source of human infection. Both acute and chronic forms of toxoplasmosis exist, where the chronic form is usually a low-grade disease without any clinical symptoms, and the acute form is more symptomatic.