21. Squirrel monkeys live together in multi-male / multi-female groups with up to 500 members.22. But in squirrel monkeys , he said, the axon regrowth " was markedly abnormal ." 23. Like most of their New World monkey relatives, squirrel monkeys are diurnal and arboreal. 24. For marking territory, squirrel monkeys rub their tail and their skin with their own urine. 25. In South America, squirrel monkeys associate with capuchin monkeys. 26. A few male squirrel monkeys have been observed interacting with groups of other monkey species. 27. Constricting and venomous snakes both prey on squirrel monkeys . 28. The other species thus drove the squirrel monkey out of most of its original range. 29. Other squirrel monkey species are known to be able to live more than 20 years. 30. Other primates with reported sightings not included in this list are vervet monkeys and squirrel monkeys .
