 All coatis share a slender head with an elongated, flexible, slightly upward-turned nose, small ears, dark feet, and a long, non-prehensile tail used for balance and signaling.Ring-tailed coatis have either a light brown or black coat, with a lighter under-part and a white-ringed tail in most cases.Coatis have a long brown tail with rings on it which are anywhere from starkly defined like a raccoon's to very faint.