Monkeys:
* Size: Monkeys range widely in size, from the tiny pygmy marmoset (weighing only 100 grams) to the massive mandrill (weighing up to 35 kg).
* Height: Depending on the species, monkeys can range in height from 10 cm to 90 cm.
Chimpanzees:
* Size: Chimpanzees are the largest of the apes, with males typically weighing between 40 and 70 kg and females weighing between 30 and 50 kg.
* Height: Chimpanzees are typically around 1.3 to 1.6 meters tall when standing upright.
So, to give you a better idea:
* Smallest monkey: Smaller than a squirrel
* Largest monkey: About the size of a large dog
* Average chimp: About the size of a human child
Remember, these are just general estimates. The exact size of a monkey or chimp depends on the species and individual.