Giant Marmoset

These tiny monkeys average 8 inches long, and are sometimes kept as pets. They live in family groups of 3d5 individuals, so marmoset swarms do not occur naturally. While normal marmosets are inoffensive and consume tree sap as a dietary mainstay, their larger kin are carnivorous. Giant marmosets are halfling -sized on average, and intelligent enough to use thrown stones as weapons. They live in larger family groups of 4d8 members, which work together to hunt and defend their territory. Some 10% of giant marmoset groups have osseous spikes in their tails, which they can use as weapons (+2 melee for 1d4 damage).