Rhesus Monkey belongs to Old World Monkeys.

The classification of monkeys is based on their geographical distribution and evolutionary history. Monkeys are broadly divided into two major groups: New World Monkeys (family Cebidae) and Old World Monkeys (family Cercopithecidae). The Rhesus Monkey (Macaca mulatta) belongs to the Old World Monkeys category.

Old World Monkeys:
Old World Monkeys are primarily found in Africa and Asia. They are characterized by their downward-facing nostrils, non-prehensile tails (except for a few species), and cheek pouches. Some key features of Old World Monkeys include:

1. Habitat: Old World Monkeys inhabit diverse habitats such as tropical rainforests, savannas, and mountains.

2. Distribution: They are found in various countries across Africa, Asia, and Europe.

3. Physical Characteristics: Old World Monkeys have relatively larger bodies compared to New World Monkeys. They possess a wide range of adaptations for different habitats, including varying sizes, colors, and facial features.

4. Dental Formula: The dental formula of Old World Monkeys is typically 2.1.2.3, which means they have two incisors, one canine, two premolars, and three molars on each side of their upper and lower jaws.

5. Behavioral Traits: Old World Monkeys are known for their complex social structures and exhibit a wide range of behaviors, including vocalizations, grooming, and tool usage.

6. Examples: Besides the Rhesus Monkey, other examples of Old World Monkeys include Baboons, Mandrills, Macaques, and Langurs.

Rhesus Monkey:
The Rhesus Monkey, also known as the Rhesus Macaque, is one of the best-known species of Old World Monkeys. Here are some key points about the Rhesus Monkey:

1. Distribution: Rhesus Monkeys are native to South, Central, and Southeast Asia. They are found in countries like India, China, and Thailand.

2. Physical Characteristics: Rhesus Monkeys have a pink face, a long tail, and a golden-brown coat. They have cheek pouches to store and carry food.

3. Social Behavior: Rhesus Monkeys live in large social groups called troops, which consist of multiple males, females, and their offspring. They have a hierarchical social structure.

4. Adaptations: Rhesus Monkeys are adaptable to various habitats, including forests, grasslands, and urban areas. They are known for their ability to thrive in different environments.

In conclusion, the Rhesus Monkey belongs to the Old World Monkeys category, which is characterized by their distribution in Africa and Asia, physical features, and behavioral traits.