Amazon-Basin animal caution common common-squirrel-monkey forager foraging frugivorous insectivorous mammal medical-research monkey New-World-monkey pet-trade primate rainforest-animal saimiri-sciureus Singapore small South-Americas wild-animal zoo appearance baby bedraggled Callitrichidae cling clinging fur furry gripped gripping hairy hold holding-on marmoset mother primates rain raining tail toes wet young arboreal brazilian colored colorful colors coloured colourful colours distinctive diurnal endangered-species golden-headed- tamarin golden-headed-lion-tamarin leontopithecus-chrysomelas lion-tamarin omnivore omnivorous Singapore-zoo tropical-rainforests-habitat callithrix-argentata callitrichids flesh-colored-ears forager mico-argentatus silvery-marmoset whitish-silver-grey