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The Natural History and Captive Care of the Trans-Pecos Ratsnake – Part 2

[…]with eggs being produced after a gestation period of 35-50 days.  Clutches may contain 2-10 eggs, with 5 being typical.  Eggs hatch after an incubation period of 75 days at 82 F, with a range of 65-105 days, depending upon temperature.  Hatchlings average 12-15 inches in length.     Further […]
Read more » The Natural History and Captive Care of the Trans-Pecos Ratsnake – Part 2

The King Cobra or Hamadryad, Ophiophagus hannah – natural history and zoological park husbandry – Part 1

[…]body, the female scrapes together a pile of rotting leaves and other vegetation, into which the eggs are deposited. Some construct a two-chambered nest, with the upper chamber serving as retreat for the female, while others merely coil on top of the leaf pile. The female guards her 20-60 eggs […]
Read more » The King Cobra or Hamadryad, Ophiophagus hannah – natural history and zoological park husbandry – Part 1

Breeding the Great Crested Newt, Triturus cristatus – Part 2

[…]their tails, and eventually pick up the spermatophore that the male has dropped. Several hundred eggs are laid, each being individually attached to an aquatic plant. Females use their rear legs to bend a plant leaf around each egg – quite an ordeal, and well-worth watching! Adults may consume eggs […]
Read more » Breeding the Great Crested Newt, Triturus cristatus – Part 2

Chameleons as Pets: Breeding Senegal Chameleons

[…]basking bulb, or an additional one, should be used to warm the nesting area.   Incubating the Eggs Senegal Chameleon eggs have been successfully incubated at temperatures ranging from 72 to 80 F. At 77 F, they typically hatch in 6 months. A high-quality reptile egg incubator is the surest […]
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How to Breed Dwarf African Clawed Frogs

[…]in 1-7 hours, and can include 50 -350 individual egg-laying trips to the surface; as many as 1,000 eggs may be deposited. The Eggs The tiny (2 mm diameter) eggs float and stick to aquatic plants.  Those of H. curtipes are brownish in color; H. boettgeri eggs are a bit […]

Darwin’s Frog is Extinct – Males “Nursed” Tadpoles in their Vocal Sacs

[…]season.  Amplexus and egg-deposition occurs on land. Thereafter, males guard their 20-40 large eggs for approximately 20 days. Once the tadpoles begin moving within the eggs, they are taken into the male’s mouth and maneuvered through openings that lead into the vocal sac. Perhaps as an adaptation to its most unusual […]
Read more » Darwin’s Frog is Extinct – Males “Nursed” Tadpoles in their Vocal Sacs

How To Breed Green Anoles and Raise the Youngsters

[…]arrives.  Please see these articles for further information on collecting insects. Incubating the Eggs Eggs may be incubated in vermiculite or moist sphagnum moss.  I prefer to use a vermiculite and water in a 1:1 ratio by weight (please see this article for details on setting this up), but success […]
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Frog Diets: Supplement Raises Poison Frog Egg Output & Tadpole Survival

[…]Frogs were included in the study. The increased tadpole survival was attributed to higher quality eggs being produced by female frogs. Infertile eggs, which are deposited by females as food for their tadpoles, were also believed to be of higher nutritional value following carotenoid supplementation.   A number of the […]
Read more » Frog Diets: Supplement Raises Poison Frog Egg Output & Tadpole Survival

A Monitor First – Male Rosenberg’s Monitors Cover and Guard Nests

[…]seem not to remain nearby).  Amazingly, in 8 instances a male joined the female in protecting the eggs. Other Rosenberg’s Monitors are the primary threat to eggs.  Females guarding nests attacked male intruders twice their own weight, and repelled them in most cases.  The vicious fights that ensued frequently left […]
Read more » A Monitor First – Male Rosenberg’s Monitors Cover and Guard Nests

Breeding White’s Treefrogs and White-Lipped Treefrogs – Part 1

[…]or so. The Eggs If all goes well, you will one morning find yourself in possession of thousands of eggs.  It is wise to plan ahead and arrange for friends or nature centers to take some of the eggs, as crowded conditions can cause the loss of the entire clutch.  […]
Read more » Breeding White’s Treefrogs and White-Lipped Treefrogs – Part 1

The Unique, Endangered Panamanian Golden Frog or Harlequin Toad – Part 1

[…]territory are attacked, and a wrestling bout ensues. Eggs A single egg strand, containing 200-650 eggs, is laid by each female. The egg strand is attached to a large rock, which protects it from fast currents. The eggs hatch in 7-10 days. Tadpoles The tadpoles are dark with golden flecks […]
Read more » The Unique, Endangered Panamanian Golden Frog or Harlequin Toad – Part 1

2010’s Reptile Discoveries – New Lizard Species and Facts

[…]to a live-bearing lizard!  Populations in New South Wales’ warm coastal regions produce eggs, while those inhabiting cool mountain slopes give birth to live young. Cool temperatures are associated with live-bearing in herps ranging from Alpine Newts to European Vipers, but only 2 other lizards (Bougainville’s Skink and the Viviparous […]
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Turtles Seek Heat While Still in the Egg…Do They Also Choose Their Sex?!

[…]by shining a strong light at the shell (a process known as “candling”).  Some of the eggs were buried in “nests” located on sloping ground, where sun exposure would vary, while others were located on flat ground, where the sun would strike the eggs evenly.  All of the embryos in […]
Read more » Turtles Seek Heat While Still in the Egg…Do They Also Choose Their Sex?!

North America’s Colorful, Venomous Lizard – The Gila Monster, Heloderma suspectum

[…]also take the eggs and chicks of doves, quail and other ground-nesting birds, lizards and their eggs, tortoise eggs, locusts and other large insects and carrion. These lizards are well-adapted to a harsh environment in which food is often scarce.  They gorge when food is available, consuming up to 50% […]
Read more » North America’s Colorful, Venomous Lizard – The Gila Monster, Heloderma suspectum

The Natural History and Captive Care of the Mertens’ Water Monitor – Part 2

[…]eat nearly every day without fear of obesity setting in. Breeding Clutches range in size from 6-15 eggs; when incubated at 85F they hatch in approximately 275 days. Mertens’ Monitors have evolved in habitats subjected to fluctuating weather extremes, and their eggs are quite resilient – incubation periods of 180-330 […]
Read more » The Natural History and Captive Care of the Mertens’ Water Monitor – Part 2

The Monitor Lizards (Family Varanidae) – Family Overview and Species Accounts; – Some Interesting Monitors and Their Care – Part II

[…]species. Mine thrive upon waxworms, crickets, crayfish, super mealworms, roaches, chicks and quail eggs. Pink mice are given every two weeks or so. Canned insects and monitor diets are often accepted and should be included as a source of dietary variety. Breeding Females lay 2-6 eggs at a time, and […]
Read more » The Monitor Lizards (Family Varanidae) – Family Overview and Species Accounts; – Some Interesting Monitors and Their Care – Part II

The Complex Life of a Common Pet – the Terrestrial or Caribbean Hermit Crab

[…]unique organs located on her 4th pair of legs.  She then remains on land carrying her fertilized eggs for a month or so before heading to the sea. In most populations, all gravid (egg-bearing) females march seaward at the same time, resulting in quite a spectacle.  This may be an […]
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Corn Snake Notes: History, Breeding Preparations, Color Phases – Part 1

[…]small clutches and weak offspring. Mating occurs from March to June in most regions, with the eggs being laid 25-50 days thereafter. A second clutch may be produced in late summer/early fall. An average clutch consists of 16 eggs, but may range from 6-26. At 82 F, incubation time averages […]
Read more » Corn Snake Notes: History, Breeding Preparations, Color Phases – Part 1

Choosing the Ideal Substrate for Reptiles, Amphibians and Invertebrates – Part 1

[…]are likely to lay eggs within the terrarium, the substrate should be of a type that will allow the eggs to thrive until discovered.  The tiny eggs of many geckos and anoles are easy to miss, and may desiccate if deposited in a dry area. Live Plants: the needs of […]
Read more » Choosing the Ideal Substrate for Reptiles, Amphibians and Invertebrates – Part 1

Feeding Captive Savannah Monitors (Varanus exanthematicus) and Black and White Tegus (Tupinambis merianae): Zoo Med’s Canned Tegu and Monitor Diet

[…]useful food items are land snails (available in seafood markets), tomato hornworms, hard boiled eggs (in moderation, i.e. once monthly) and canned grasshoppers , silkworms  and snails.  Pink and fuzzy mice (these are preferable to adult mice and rats) may be offered every 10-14 days. My Observations of Wild Black […]
Read more » Feeding Captive Savannah Monitors (Varanus exanthematicus) and Black and White Tegus (Tupinambis merianae): Zoo Med’s Canned Tegu and Monitor Diet
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