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Amazon Milk Frog - Trachycephalus resinifictrix (Captive Bred)

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About This Product

Defining Characteristics:

  • Great beginner tree frog
  • Can be handled infrequently
  • Bold
  • Easy to keep
  • Moderately loud call
  • Large
  • Can be kept in groups

Name: These frogs are most commonly called ‘Amazon Milk Frogs‘ presently, due to the milky white secretions that are released from the frog’s back when threatened (this rarely occurs with captive-bred animals). In the past, Amazon Milk Frogs have also been called Amazon Cave Frogs, and Gold Mission Frogs, due to black markings on their eyes that resemble crucifixes. The Amazon Milk Frog's scientific name is Trachycephalus resinifictrix.

Recommended Terrarium Size: Being large frogs, Amazon Milk Frogs require a large enclosure. A 29 gallon aquarium or 18x18x24 glass terrarium – is a good sized enclosure for 2-3 juvenile or adult Amazon Milk Frogs. The enclosure should provide plenty of perching areas, such as wood branches or vines, as well as live plants or fake plants.

For younger Amazon Milk Frogs, moist paper towel or long fiber sphagnum moss is the preferred substrate. Adult Amazon Milk Frogs can also be kept above water instead of a substrate, or Josh's Frogs Frog Foam works very well as a liner and is available in a variety of sizes. All substrate should be changed frequently. Amazon Milk Frogs are big frogs, and as such, can make a big mess.

A large water bowl is a necessity. Water bowls should be cleaned daily and scrubbed out with hot water. When cleaning the enclosure and décor, use a 5% bleach solution or Josh's Frogs ReptiSan. If paper towel is used as a substrate, it should be cleaned daily.

Josh’s Frogs offers tankless and complete kits that are perfect for Amazon Milk Frogs. 

Temperature: They can tolerate temperatures between 70-85F, and seem very tolerant of temperature swings. Ideally, keep Amazon Milk Frogs in the mid/high 70s. A 5-10F temperature drop at night is ideal. A good Thermometer and Hygrometer is recommended to keep track of environmental conditions.

Humidity: In the wild, precipitation and humidity fluctuates based on season, with a heavy rainy season in the early part of the year. Adult Amazon Milk Frogs can handle a wide range of humidity levels, but prefer humidity levels around 50-70% with plenty of ventilation/air movement. Young Amazon Milk Frogs do much better with 70-80% humidty, and some air movement. Moist, stagnant air is a big no-no with milk frogs, while very young animals dry out easily. Routine spraying and a full screen top will aid in providing proper humidity levels. Some keepers elect to keep Amazon Milk Frogs over water to aid in maintaining humidity.

Size: Adult Amazon Milk frogs can measure from 3” to 5”, with females being larger than males. Amazon Milk Frogs will continue to grow throughout their lives, and older animals can be quite large. The amazon milk froglets sold by Josh’s Frogs measure about 1″ long, and are eating 1/4″ crickets.

Age: Captive life span of the Amazon Milk Frog is unknown, but suspected to be in the 5-10 year range, based on experience with similar species. Amazon milk frogs are 8-12 weeks old when sold by Josh’s Frogs.

Feeding: Amazon Milk Frogs are voracious eaters, consuming anything that moves and fits into their mouth. A staple diet of appropriately sized crickets is a great place to start. Add other feeder insects such as wax worms, roaches, horn worms, and meal worms, with the occasional pinky mouse appreciated. All feeder insects should be dusted with the proper vitamin/mineral supplement. Josh’s Frogs sells amazon milk frogs that are eating 1/4″ crickets.

Sexing: These frogs are generally sexable by 8-10 months of age. Females are larger and more rotund, while males are harder to distinguish as their vocal sacs are typically hidden by folds. Males also develop slightly swollen nupital pads on their front feet which aid in holding on to the female - these are typically visible during the breeding season. Josh's Frogs sells 2-3 month old Amazon Milk Frogs that are unsexable.

Color/Pattern: Amazon Milk Frogs start out life at gray froglets with black and white banded legs. After a couple weeks, this gray body changes into a contrasting white and black banding pattern. After 6-8 months, the black bands may expand and become more of a gray color. A slight tan/brown color may sneak in on older animals. Milk frogs have a bright blue mouth. The area around their nostrils and toes can appear blue, as well.

Social Behavior: Amazon Milk Frogs do great in groups. Overly amorous males may harass females on occasional, but Amazon Milk Frogs typically coexist peacefully in groups.

Breeding: They are not exceptionally difficult to breed, but can be difficult to breed consistantly. Seasonal cycling, coupled with a large water volume and heavy feeding, can encourage breeding. Each female will lay between 300-1000 eggs, which quickly develop into voracious tadpoles that eat A LOT! After about 2 months in the water, the tadpole morph into dime to penny size froglets, which are initially gray in color.

Natural Range: Brazil, Colombia, Venezuela, Trinidad, Tobago, French Guiana, British Guyana, Ecuador, Peru, and Bolivia. Basically, Amazon Milk Frogs can be found throughout the Amazonian Basin, below 800m in elevation.

History in the Hobby: Amazon Mik Frogs are fairly well established in the US Herp hobby. Captive bred relatively frequently, milk frogs can be difficult to locate for sale at times, but are generally available several times a year at Josh's Frogs. Our stock comes from private hobbyists and zoos from around the world. Our breeders are 2-4the generation captive bred.

A Special Note on Shedding: All frogs and toads shed, but they don't always do it in public! Amazon Milk Frogs are not shy about it whatsoever, and will typically shed at least once a week. They'll develop a shiny appearance for a few hours, before using their legs to peel off the old skin, then eat it. During this time, the milk frog will generally hang out at the bottom of the tank. Do not be alarmed - this is completely normal behavior, even though it looks a little strange!

Links of Interest:

Wikipedia – Amazon Milk Frog natural history and information.

Amphibian Care – Good Amazon Milk Frog Caresheet by Devin Edmonds, a very accomplished frog hobbyist and researcher.

Still not sure if Amazon Milk Frogs from Josh's Frogs are the right pet frog for you? Read the reviews below and see what other customers are saying! Then, make sure to check out our more in depth Amazon Milk Frog Care Sheet!


After placing an order containing a live animal, you will receive a scheduling email containing our JotForm scheduling link to schedule your new pet's delivery date.

With this scheduling link, you will be able to schedule your order's delivery up to 30 days in advance. You will be able to choose a date of delivery for Tuesday-Saturday (Saturday arrival depends on the carrier's service availability) with the estimated time of arrival generally being 12pm, or 4:30pm for more rural areas. Overnight lows must be above 40°F to ship directly to you (or above 30°F for FedEx Ship Center pickups) as well as below 90°F by estimated time of arrival.

If you require further assistance, or prefer to talk to one of our Customer Service agents, please feel free to reach out to our [email protected] email or our phone line 1-800-691-8178.

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Customer Reviews

Based on 21 reviews

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Andreas l hyneman

Great service

Hello, I have bought, from Josh frogs before I love there team there staff is easy to help you out and answer any questions that you have. But from them. The one thing I want to see from them as a company. Can we chose the sex of the frogs we want. But I still give them a 100% . Thank you Andreas hyneman


amazing i’m so happy

i’ve been waiting about 2 weeks but the day has come they are here!! and oh my god they are adorable i can’t wait to order more


Very Healthy babies!!

Bought 3 babies for Christmas. They arrived quickly and healthy. They've grown so fast!!


Great Condition

They came securely packaged and were friendly and bold right out of the box. Both are healthy and thrilled with their new enclosure, very interesting to watch.


Milk frogs

I bought everything for my frog from Josh's frogs, except my tank, but I wish I would of cause they have complete care kits that at awesomely priced. They were at the Baltimore Repticon on May 28th and we're the only ones to have amazon milk frogs, he is super cute and loves his new enclosure! The staff are knowledgeable about all the products they sell and give great advice on how to care for them. Thank you zack, for all your advice. I will be ordering all my frog needs from joshs frogs!

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