Yemao Yumao
Yemao yumao are felines with small feathered "wings" and clumps on their chest, and are found in the mountains of China. Though their wings grant no lift, they are used to show off for potential mates and intimidate competitors. They can live upwards of 400 years and reach sexual maturity at 75 years. They have the longest gestation period of any mammal, giving birth after two years and eight months, and can delay birth if conditions are bad. They are a dead species.