Toxoplasma gondii is a microbial parasite that infects humans and but needs cats to complete its full life cycle. New research shows why: the sexual phase of the parasite’s life cycle requires linoleic acid, a nutrient/lipid found at uniquely high levels in the felines, because cats lack a key enzyme for breaking it down.
Click here for original story, Parasite needs chemical (lipid/nutrient) in cat intestines for sex
Source: ScienceDaily