Baby Tarantula Spiderlings

Published Categorized as Tarantula Care
baby tarantula

Odds are if you’re here, you have a pet tarantula or are thinking about getting one. You’ve no doubt been scanning the internet and looking at advertisements from spider dealers and noticed that most focus on selling captive-bred baby theraphosids.

If I may put my two cents in (as if I haven’t been on page after page), I think getting some spiderlings is a great idea for the novice and the experienced!

The primary reason is somewhat parallel to the aims of this site: a few people have studied some tarantulas enough to successfully produce a steady stream of captive-born specimens. By doing so, breeders are fostering interest in and knowledge of a widely misunderstood animal and are also curbing the practice of catching adult tarantulas in the wild.

It is my thought that when adult tarantulas are captured for the pet trade, many die in pet stores from ignorant personnel and the many more that are sold will never get a chance to reproduce. Therefore, their numbers in the wild decrease.

While the demise of tarantulas in to the pet trade is certainly not even comparable to the level of the atrocities committed by the loss of their habitat in the wild, there is seldom reason enough to compound the problem by purchasing a wild-caught adult tarantula that is not intended for breeding.

Tarantula breeding is a very, very new thing. There are few spider breeders that have been around more than a decade, so many types of tarantulas that were the first of a species to be born in captivity are only now reaching maturity (captive bred king baboons are an example of this).

If those that sell captive bred are supported and are thus able to thrive to produce second and third and perhaps tenth generation tarantulas, then the demand for wild caught individuals will be all but stemmed.

Such a plan may require a few decades interim in which wild caught individuals are used by established breeders to variate bloodlines, and thereafter a small amount may be selected by qualified personnel (zoos, scientists, etc.) to further provide new DNA, but such numbers wouldn’t even register in comparison to the importation that takes place today.

Ponder for a second about the need for “wild caught” mice and hamsters and crickets and horses and dogs and cows- once a species established, its population in captivity could exceed that of its population in the wild (sad truth, but that is some animals’ only hope of averting extinction).

Another reason for having a few baby spiders is that it is simply fascinating to watch them grow and change!

It’s always a thrill to watch a baby start to acquire elements of its adult coloration, such as with this Poecilotheria rufilata.

Baby Tarantula Care

Houses and Food: Most baby tarantulas look nothing like their parents, save for the same number of legs. They are tiny, fragile things that need somewhat different arrangements if they are to survive. Of primary importance is recognizing that spiderlings are indeed babies.

They need to eat. . . and eat a lot. Wingless fruit flies (for very tiny babies), little “pinhead” crickets, termites, and little mealworms are acceptable for newborn tarantulas.

You can progressively graduate to larger cricket sizes as the spider grows. What’s most important is that your spiderling needs to be able to find its food easily. If you place your spiderling in a large enclosure with the notion that it will be happy with room to roam as it “grows into” its container, you’re doing your new darling a disservice.

Like human babies have cribs, spider babies need a small, safe place where they do little but eat, rest, and grow.

Little pill bottles or small deli cups work well for housing very young spiderlings. Think of one of those tiny New York apartments where there is only room for one person. It may be a nightmare for some people to live in, but cleaning services and spiderlings love small spaces. They are easy to clean and easy for the spiderlings to find their food.

Here is a small sampling of the myriad of different containers that can house spiderlings. As they grow, they move to progressively larger facilities.

Note: There are copious ventilation holes poked into the tops of each container. Though tarantulas don’t consume much air, ventilation is essential to prevent fungus growth.
This baby Poecilotheria formosa has not one, but two little crickets stuffed in its face!


Humidity is important for a spiderling’s survival. Spiderlings are too tiny to drink out of a water dish and so get their refreshment from sucking moisture out of damp substrate. Also, they will be molting frequently and the extra moisture they absorb into their bodies will help them while shedding.

Even the babies of desert species need humidity, so it is important to lightly mist the substrate of their homes often (note: that does not mean they’re amphibians- moist substrate will be fine. Don’t make it a swamp).

Few things are more satisfying than helping something grow and thrive. If the tips above are coupled with general practices for adult tarantula care, then your spiderling should live a long, healthy life and you’ll enjoy many fascinating hours watching them grow.