Lemurs are members of the class of primates known as 'Prosimians' which means 'primitive simians'. The species include:
- Red ruffed lemur
- Alaotran gentle lemur
- Black and white ruffed lemur
- Ring-tailed lemur
These animals really are small in size. The smallest species weighs about 30 grams, while the largest weighs about 10 kilograms.