Welcome to Monkeys *R* Us, We raise adorable, sweet, hand fed, and tame Common, Penicillata, and Geoffreys Marmoset Monkeys. Marmosets are one of the smallest monkeys in the world and can make amazing pets. As adorable as they are, they have very specific needs and care to remain a desirable companion. To learn more, please read the information on our website. The more information you know about marmosets the better experience you will have with your baby. We usually have hand raised male and female babies available. Call Kathy at 615-631-9819 for pricing and availability.

You'll find more information below about Marmoset Monkeys. Please read the information on Marmoset Diet and review Frequently Asked Questions to be more informed.

Marmosets (Callithrix jacchus) are New World monkeys. They originally lived in the rainforest of the Northeastern coast of Brazil. Marmosets are very small monkeys with relatively long tails. Males and females are of similar size with males being slightly larger. Their body being around 7 inches and weighing 10-16 ounces. The fur of the marmoset is multicolored, being sprinkled with brown, grey, and yellow. Common marmosets have white ear tufts, while Penicillatas have black ear tufts and Geoffreys have a mostly white fur around their faces. A marmoset's face has black across the nose area and a white blaze on the forehead. The coats of infants lack ear tufts and have grey fur over their head and neck. Marmosets have claw-like nails on most of their fingers. Only their big toes have the flat nails. They can hang on to trees vertically and leap between them, as well as run across branches.

Their life spans are about 12 to 18 years, with maturity being about 18 months. The age of reproduction is somewhere between 17 and 20 months. They are usually pregnant for 144 days or around 5 months. They usually have 2 offspring but can have up to 3.

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Below are pictures of our 5 kinds of New World monkeys. If you love the baby on the left be sure you can love it as an adult on the right. They DO grow up.

common white tuft marmoset monkey adult common white tuft marmoset
Common Marmosets are small New World monkeys that are mottled brown, grey, black and white with streaks of orange. They have distinctive large, beautiful, white ear tufts and a long banded tail. They have pail skin on their faces which darkens with exposure to the sun or UVB lights and a white heart blaze on their foreheads. Babies are born with a brown greyish coat and develop their white ear tufts and forehead blaze as they age. (See pictures for examples) Male and Females are about the same size with an 8 inch body and close to 1 pound. Their average life span is about 15 years.
Penicillata (black tuft) Marmosets are characterized by black tufts of hair around their ears. It typically has some sparse white hairs on its face. It usually has a brown or black head and its limbs and upper body are gray, as well as its abdomen, while its rump and underside are usually black. Its tail is ringed with black and white. The black-tufted marmoset reaches a size of 7 to 10 inches and weighs a little under a pound.
Geoffrey's marmoset is an exceptionally distinctive monkey, most readily recognized for its conspicuous white cheeks, forehead and throat, which contrast starkly against its elongate black ear-tufts, tan to black face, and dark coat. The body is greyish-black mottled with yellow-orange on the upper parts, brown on the underparts, and the long black tail is lightly ringed. Their life span is 15 years or longer. The Geoffrey Marmoset reaches a size of 7 inches and up. They can weigh close to a pound or more.
Cotton top tamarins are easily recognizable due to the mane of beautiful long white fur that flows over their head which comes to a Moahawk just about their eyes. The rest of their face is black skin with banding of white or grey above their eyes.These small tamarins have white bodies, arms and legs with brownish backs. Their body is around 7-10 inches in length with tails another 12-16 inches. They weigh about 1 pound. In the wild their lifespan may be as little as 13 years, while in captivity this can extend out to 23 years. Today cotton tops are classified to be criically endngered and one of the rarest primates in the world. The main reason for the severe decline in the cotton top tamarin population is that they have lost more than 95% of their natual habitat to deforestation. It is estimated to be around 2,000 mature cotton tops left in the wild. For this reason cotton tops must remain in the state they were born and can not be sold to another state.

This is a diet for captive bred marmosets and not the diet a marmoset would have in its natural state. The following is from personal experience. We are not vets. These are some of the food choices that we offer our marmoset monkeys.

The following is a list of foods that you can feed your marmoset. Try not to feed the same foods 2 days in a row. Listed here are several choices to make it easier to plan your monkey's diet.

Baby Formula (for bottles) Varies by age

1 scoop of formula per every 2 ounces of water
1 teaspoon of Greek or Activia yogurt
1 teaspoon of baby cereal
½ teaspoon of Marmoset Protein Diet

The large Baby bottle is for mixing your formula. Always keep mixing bottle with formula refrigerated. The smaller bottle is for feeding your baby marmoset. Warm feeding bottle to a little warmer than body temperature. Shake and test on your wrist to ensure the correct temperature. Always clean your bottles thoroughly and put empty feeding bottles back in the refrigerator to keep bacteria away. Never keep mixed formula over 3 days.

The average amount consumed at each feeding is as follows:

Age Amount
Birth to 2 weeks .4cc - 2 1/2 cc
Week 3 to 4 2 cc - 4 ½ cc
Week 5 to 12 4 cc - 7 cc
Weeks 12 and up 6 cc – 10cc

Feeding Schedule

Age Day Feeding Night Feeding
Birth to 4 weeks Every 2 hours Every 2-4 hours
4 to 8 weeks Every 3-4 hours Every 4-5 hours
8 to 12 weeks Every 5-6 hours Every 5-6 hours
12 weeks and up Every 5-6 hours As needed if hungry

All babies are different. Some will eat more or less. When your baby is full most of the time they will turn their heads so you know they are full. Never force feed your baby as it can cause your baby to spit up which could result in choking/aspirating. Contact us if you have any questions concerning feeding amount or schedule.

Protein Rich Choices

Asparagus Broccoli Brussels sprouts
*Bug Blend (Crickets Grasshoppers & Mealworms) Cheeses Chicken
Cottage Cheese Crabmeat *Crickets
Eggs-Boiled /Scrambled Fish (deboned baked or broiled) Grasshoppers
Greek Yogurt Green Peas *Insectivore Fare
*Marmoset Canned Diet *Marmoset Jelly *Marmoset Protein Diet
*Monkey Biscuits Monkey Chicken Crackers *Monkey Chow
*Nuts and Seeds Oats *Pumpkin Seeds
Salmon Shrimp (boiled) Super Greens
Tofu Turkey *Wax, Super Worms & Mealworm

Meats are not to be fried. * Indicates link to order from See these items and other choices.


Asparagus Beets Broccoli (Spears & Sprouts)
Brussels sprouts Carrots Cauliflower
Celery Collard Greens Corn (yellow)
Cucumber Green Beans (Snap Beans) Mushrooms
Mustard Greens Mustard Spinach Okra Peas (Green)
Peppers (Sweet) Potatoes (Sweet) Cooked Pumpkin
Squash Sweet Potato cooked (Yams) Tomatoes (Green & Red)

The more variety of fruits and vegetables you introduce to your marmoset from an early age the better. This list is not complete. You can feed them most of the healthier fruits you purchase for your own family. I chop the fruits and veggies into bite size pieces. There are so many choices which makes it easy to find fruits and vegetables that they like. They will be healthier eating a wide variety of fruits and vegetables. Remember most fruits are high in sugar.


Apple Apricots Banana
Blackberries Blueberries Cantaloupe
Cherries (Sweet) Coconut Cranberries
Figs Grapes Grapefruit (do not feed everyday)
Honeydew Melon Kiwifruit Mango
Mulberries Nectarine Orange
Papaya Passion Fruit (Purple) Peach
Pear Pineapple Plum
Prunes Raisins Raspberries
Strawberries Tangerine Watermelon


Below is a list of dried treats that can be found at We recommend that treats be fed out of your hand and not normally part of their daily diet. Marmosets love treats. However don't give too many so that they will still eat their regular diet.

Banana Chips Berry Good Mix Blueberries
Cantaloupe Carob Drops Carrots
Cherries Coconut Cranberries
Critter Charms Fruit Crunchies Fruit Delight
Grab -N- Go Hugs N Kisses Kiwi
Lemon Drops Love Bugs Mango
Mellow Puffs Monkey Balls Monkey Feast
Monkey Mix Monkey Morsels Monkey Munch
Monkey Veggie Garden Nutty Buddies Nutty O's
Papaya Peanut Buggers Peanut Butter Drops
Peanuts in a Shell Pineapple Pumpkin Seeds
Rainbow Softies Snack Attack Soybean Supreme
Strawberry Yogurt Raisins Sugar Cane Sticks Sunflower Seeds
Trail Mix Trix Tropical Fruit Snack Pack
Veggie Chips Veggie Crunchies Veggie Vittles
Yogurt Drops Yogurt Raisins Yogurt Snax
Yogurt Variety Pack Yummies  

General foods

*Acacia Gum Applesauce (unsweetened) Baby cereal
Baby food (no onion powder) Baby puffs Cheerios
Cream of Wheat *Nectar Oats
Pasta Rice Shelled Sunflower seeds (in small amounts)
Yogurt (Greek, Activia) 100% Fruit Juice (diluted)  

Keep your monkey away from:

Onions (Onion Powder) Pitts (avocado, cherry, peach, etc.)
Cats (cat scratch fever) Anyone sick or with a cold sore
Avoid Kissing your monkey (harder than it sounds) Anything that's been in your mouth
Caffeine (Soda, Tea, Etc.) Fried Foods
Refined-Added Sugars Chocolate
Spices and Seasoning (Salt, Pepper, Etc.) Toxic Plants *


* The list of plants below are TOXIC to your monkey: Acorn, Caladium, Dogwood, Japanese Yew, Monkshood, Potato Sprouts, Ackee Fruit, Calla Lily, Dumbcane, Jasmine, Moonseed, Primrose, Amaryllis, Cedar, Elderberry, Jerusalem Cherry, Morning Glory, Rhododendron, Anemone, Century Plant, Elephant Ear, Jimson Weed, Mother-in-law tongue, Rosary Pea, Angel Trumpet, Cherries (PITS), English Ivy, Jimson Weed Seeds, Mountain Laurel Snow Drop, Apple Seeds, Peach Seeds, Chinaberry, Euonymus, Johnson Grass, Mushroom, Sorrel, Apricot Pit, Chinese Lantern, Fava Bean, Jonquil, Narcissus, Star of Bethlehem, Arrowhead, Choke Cherry, Four O’clock, Nephthytis, Sweet Pea, Autumn Crocus, Christmas Rose, Foxglove, Lantana Camara, Nightshade, Swiss Cheese Plant, Avocado Leaves, Chrysanthemums, Golden Chain, Larkspur, Oleander, Thread Leaf, Azaleas, Climbing Night Shade, Hemlock poision, Laurels, Oak Tree, Thorn Apple, Baneberry, Cocklebur, Holly Berries, Lily of the Valley, Peach Seeds, Toadstools, Belladonna, Columbine, Horse Chestnut, Ligustrum, Pencil Tree, Tobacco, Betel Nut Palm, Cowbane, Horsetail Reed , Lobelia, Periwinkle, Tomato-vines, Bird of Paradise, Creeping Charlie, Huckleberry, Locoweed, Peyote, Tulip, Bittersweet, Crocus, Autumn, Hyacinth(bulbs), Lucky Nut, Philodendron, Virginia Creeper, Black Locust, Cyclmen, Hydrangea, Marijuana, Pigeon Berry, Water Hemlock, Bleeding Heart, Daffodil, Impatiens Plant (NOT FLOWER), Marsh Marigold, Poinsettia, Willd black Cherry, Boxwood, Daphne, Indian Turnip, Mayapple, Poison Hemlock, Wild Mustard, Bracken Fern, Deadly Night Shade, Inkberry, Mescal (Peyote), Poison Ivy, Wisteria, Buckeye, Delphinium, Iris, Milkweeds, Poison Oak, Yaupon Tree, Burning Bush, Desert Potato, Ivy, Boston, Mistletoe, Pokeweed, Yellow Jessamine, Buttercups, Devil’s Ivy (Pothos), Jack in the Pulpit, Mock Orange, Poppy, Yew

Non-Toxic Plants include:
Abelia, Bamboo, Corn Plant, Eugenia, Lily (Day, Easter or Tiger), Scheffeiera, Abyssinian Sword Lily, Begonia, Crab Apples, Flowering Crab, Lipstick Plant, Sensitive Plant, African Palm, Bird’s Nest Fern, Creeping Jenn, Gardenia, Magnolia, Spider Plant, African Violet, Black Olive, Croton, Gloxinia, Marigold, Swedish Ivy, Airplane Plant, Blood Leaf Plant, Dahlia, Grape Ivy, Monkey Plant, Umbrella Plant, Aluminum Plant, Boston Fern, Daisies, Hedge Apple, Norfolk Pine, Violets, Aralia, Bouganvilla, Dandelion, Hen & Chicks, Peperomia, Wandering Jew, Arucaria, Cactus, Dogwood, Honeysuckle, Perunia, Weeping Fig, Asparagus Fern, California Holly, Donkey Tail, Hoya, Prayer Plant, Weeping Willow, Aspidistra, California Poppy, Dracaena, Impatiens, Purple Passion, Wild Onion, Aster, Camelia, Easter Lily, Jade Plant, Pyroocantha, Zebra Plant, Baby’s Tears, Christmas Cactus, Echevaria, Kalanchoe, Rose, Batchelor Buttons, Coleus, Eucalyptus, Lilac, Sanseveria

Use caution when letting others touch your baby. Think about it like when you would bring a baby home from the hospital. Only let trusted family and close friends hold or touch your baby. You trust them to say "I better not hold/touch your monkey today because I don't feel too good" or "I think I have a cold sore coming up so I need to stay away." You can trust them that just in case your monkey is feeling playful and scratched or nipped them they would understand.

Below are a few examples of a daily menu that can be followed:
*Our breakfast consist daily of Marmoset Protein Diet, Sprinkle of Vitamin D3 plus a taste of fruit on top.
*Our lunch usually includes canned Marmoset Diet, Sprinkle of Vitamin D3, veggies, and touch of starch, insects or fruit.
*Afternoon snack should be fed out of your hand to help bonding.
Snacks should not interfere with their regular diet.

Monday Oats
Protein Powder
Vitamin D3
Thin Apple Slice
Fresh Butternut Squash
Marmoset Diet
Tofu-diced cubes
Vitamin D3
Mix of Granola,
Mealworms, Baby Puffs,
Snack Attack
Tuesday Scrambled or Hard Boiled Eggs
Protein Powder
Vitamin D3
Unsweetened Applesauce
Sprinkle with Mealworms
Mixed Veggies
Brown Rice
Marmoset Diet
Vitamin D3
Mix of Seeds and Nuts
Yogurt Snax
Whole Wheat Cheerios
Wednesday Protein Powder
Vitamin D3
Baby Cereal
Spoonful of Cottage Cheese
Blueberries on top
Cooked Carrots
Marmoset Diet
Diced Tomatoes
Vitamin D3

Mix of Pumpkin Spice
Cereal, Crickets, Dried
Berries, Monkey Feast

Always provide fresh water (not tap)
These are just a few ideas but by no means the only foods that can be fed.
Remember as soon as possible introduce a variety of foods to your marmoset to ensure it has a healthy and varied diet.

If you have any questions about their diet, please feel free to give us a call.
Kathy @ 615-631-9819
Amanda @ 615-962-4506