Interesting Facts About Marmoset Breeding, Handrearing & Growth


Take a look at the image down below to get an idea of what differentiates a male from a female. The genitalia can be examined to determine the gender of the animal.

The average amount of time between births is approximately 151 and 156 days. There is a range of 140 to 146 days for the gestation period. They begin to become less active in the few weeks leading up to the birth. When they are giving birth, you should not bother them in any way. In most cases, it will take place in the evening. The actual delivery takes about sixty minutes. The beginning of labor is determined by the time that the first young can detect the beginning of contractions. The time that elapses between each infant is typically between two and five minutes. The afterbirth typically occurs ten to thirty minutes after the delivery of the final young and is consumed by the female as well as other members of the social group. If the labor is taking too long, you should seek the advice of your veterinarian (caesarian can save the female). They typically have two children at a time. There are times when one, two, or three monkeys are born. In most cases, if a mother gives birth to three children, one of those children will pass away within the first week after birth. It is possible that one of the three needs to be reared by hand. Do not underestimate the difficulty of the task at hand; HAND-REARING is not a simple job. Everyone in the family takes turns carrying the newborns. They will occasionally hand the infants back to the mother so that she can continue to nurse them. After 30 days, the newborns will begin to show some interest in food.
When the infants have reached the age of 40 days, they are able to make it on solid food and milk substitutes.
Suckling typically lasts for about a hundred days.
At the age of six months, the marmosets are old enough to be weaned completely. By this time, the breeding female has typically given birth to another litter, and the subadults have begun to learn how to care for themselves.
Marmosets reach sexual maturity between 15 and 18 months after birth.
In captivity, marmosets can live anywhere from 7 to 20 years.


Marmosets are capable of giving birth to more than two monkeys on occasion. The fact that the mother can only properly care for two infants at a time usually results in the rest of the monkeys passing away within the first week of their lives. It is possible that one of them will need to be manually reared in order to stop this from happening.
Hand-rearing is not a simple task, so make sure you don’t undervalue its difficulty.
During the first three weeks of their lives, the young animals need to be given a protein multivitamin concentrate and powdered human milk substitute every two hours, from 8:00 to 24:00. Mix one teaspoon of glucose with 28 milliliters of sterile water for the first feeding (give only 0.3-0.5ml). After the first three weeks, you can gradually introduce baby cereal into their diet.
Example 1: Rearrange your hands according to the schedule
Example 2: Rearing of the hand – on the timetable!!! You might want to think about giving them Primilac as an alternative to artificial milk or human milk substitute. This is a non-human primate milk replacement product!!!
After each feeding, gently massage the anal region with cotton wool that has been soaked in baby oil. This is necessary in order to maintain the moisture level of the anal skin.
Infants should be kept in a wooden nest box at a temperature between 25 and 28 degrees Celsius (humidity at 50 percent ).
Provide the child with a “artificial mother” so that they can cling to it (like a towel).
After one week, you should administer 1 drop of vitamin D3 to your monkey twice per week.


Newborn : Normally born with eyes open.
Head and body : 60-80mm, weight : 30g
Body covered with fine gray hair, tail with dark and grayish bands.
Ear tufts absent.
2nd Week : Able to crawl unsupported
3rd Week : Starts to take some solid food from parents
4th Week : Leave parents from time to time.
5th Week : Lap liquids.
6th Week : Head and body : 120 – 50 mm, weight : 70g Milk dentition complete, If necessary they can survive on solid food and milk substitutes
7th Week : Weight : 80g
8th Week : Head and body : 140-70mm – weight : 91g
9th Week : Weight : 97 g
10th Week : Weight : 103 g
11th Week : Small ear tufts become visible (dark gray). Weight : 105 g
12th Week : Independent of parental care.
14th Week : Ear tufts becoming silvery.
Suckling ended.
17th Week : Weight : 137 g
20th Week : No longer on adult back.
22th Week : Weight : 166 g
28th Week : White ear tufts
Weight : 174 g 60th Week :
Full sexual maturity reached.

   😍 These are must-have items such as small animal cages, cage accessory and food for Finger Monkey pet owners, maybe you need them too? Click images & check them out!

 🥰 This large double unit cage has three ramps, ramp covers, and two resting shelves. It is easier to clean the cage interior with removable base pans and double doors. Click the link to see different story options for your pet.

🥰 For the finger monkey diet, you can feed them these fresh unsalted cashews. As much as I enjoy these good-quality cashews, my finger monkey pet does too. Check out if your pet will like it too.

🥰 These cage accessories go with the large double unit cage! They are shelf, pan and ramp covers that are easily removable and washable in the machine. Click the link to check their color options.

 🥰 This dried sweet tamarind is convenient as it comes without the shell and seed. It is also natural and fresh! Check out the reviews to see if you want to feed your finger monkey this fruit rich in magnesium and calcium.

 🥰 This small animal playpen is perfect for your finger monkey pet to be closer to nature. It has space to put treats, litter box and more. Click to see the video.


🥰 This Maize Flakes Cereal is organic and healthy with ingredients from sprouted oatmeal, which is high in protein. This is perfect for your finger monkey’s diet! Click the link to see other cereal options.

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