Monkeys are not pets!! I work with these animals in a professional setting. This is a Common Marmoset, scientific name Callithrix Jacchus. Dogs, cats, and many rodents have been domesticated for thousands of years and make fine pets. There are no domesticated primates. They belong in the wild. Primates need a lot of care and attention, more than most pet owners are capable of giving. Please, please, please do not get a pet primate. If I am unable to disuade you then at least do a lot of research before you even consider getting a pet primate. This is not an animal you can just throw in a cage and give food, water and toys. Marmosets are a group living species of monkey from South America. They form monogamous pair bonds and usually live in large family groups. They may look cute but they are not a good pet. If you want to be a good pet owner, give a loving home to a homeless dog or cat from a shelter. There are millions of dogs and cats euthanized every year because there aren't enough good homes for all of them. And never get any animal on impulse. Do your research, even for dogs and cats. Being a pet owner is a huge responsibility. You have to be prepared to care for this animal for the rest of it's natural life. You can't just get rid of it when you tire of it or it becomes inconvenient. Please be a responsible pet owner.