A tiny eastern pygmy marmoset sits in a shaft of light and cautiously looks for danger

pygmy marmoset marmoset small mammal new world monkey primate monkey callithrix pygmaea iucn primates small wildlife monkeys wildlife trade tiny captive smallest zoo little mammal biodiversity fluffy conservation pet trade rainforests rainforest species captivity hairy ecology environment nature forest omnivore habitat habitat loss south america lovable ecological sweet extinction amazon brazill diverse cute adorable evolution cuddle captivating climate change