Major difference between the two-fingered and three-fingered sloths in Costa Rica are;
- Two-fingered with 2 fingers and Three-fingered with 3 fingers.
- Two-fingered sloths are mainly one color, and often light tan throughout their body with their face being slightly darker. Three-fingered have a darker 'mask' like face as well as a darker brown fur. The males will have an 'eye' on their backs. This is a spot where the color is lighter brown with a dark brown almost black thin oval.
Technically, two-toed sloths should be called two-fingered sloths as they have three toes on their feet, but just two fingers on their hands, while three-toed sloths have three toes and three fingers.