Whitecough and greencough are the most common chest infections known to the Clan cats. Whitecough is the milder form, but if untreated, it can develop into the much more severe greencough. Cats usually catch it during leaf-fall and leaf-bare. It can be fatal for elders and kits. It has claimed the lives of several cats. It spreads quickly and is highly contagious. Greencough- Greencough is highly contagious. To keep it from spreading keep the cat away from others especially kits and elders. Same rules apply to Greencough as Whitecough only a higher dose of catmint.