Gelada monkeys can weigh up to 35 pounds (16 kilograms) and stand up to 2 feet (0.6 meters) tall.
Squirrel monkeys can weigh up to 1 pound (0.45 kilograms) and stand up to 1 foot (0.3 meters) tall.
Spider monkeys can weigh up to 23 pounds (10.5 kilograms) and stand up to 3 feet (0.9 meters) tall.
Chimpanzees are one of the largest monkey species and can weigh between 100 and 150 pounds (45–68 kilograms) and grow to be 5 feet (1.5 meters) tall.
Mandrills are one of the largest monkey species and can weigh up to 82 pounds (37 kilograms) and grow to be 3 feet (0.9 meters) tall.