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[…]however, the male African bullfrog turns his pugnacious nature towards defending his numerous eggs and tadpoles, and he is fearless in that task. I have seen footage of one leaping at the faces of African lions that had shown interest in his precious charges (the lions were only about 2 […]
[…]and deposit their small clutches of eggs on land. One or both parents may guard and moisten the eggs. Some species transport the tadpoles to pools of water upon their backs. Female Strawberry Poison Frogs and certain others lay unfertilized eggs as food for their tadpoles, awaiting a signal from […]
[…]Snakes produce unusually large clutches, which range in size from 20 to over 50 eggs. As the eggs are deposited below cover or within shallow burrows, a large nesting box should be provided to gravid females. Hatchlings measure 8 ½ – 11 inches in length. Temperament Rainbow Snakes are […]
[…]a well-planted aquarium, a group will provide much of interest to observe – and, perhaps, even eggs (more on breeding next time). Further Reading For more on Dwarf Frog care, please see: Distinguishing the African from the Dwarf African Clawed Frog Live Foods: Worms and Worm Look-alikes […]
[…]raise their own core temperatures and that of the egg clutch. Female Burmese Pythons lay 18-100 eggs after a gestation period of 60-150 days. The eggs hatch in 55-75 days. The hatchlings are 18-24 inches long (large enough to consume adult mice) and become sexually mature at a length of […]
[…]fed very well, and are good at negotiating domestic squabbles!). Female Leopard Geckos produce 2 eggs, which are often visible beneath the skin as they develop. Remove the male once copulation has been observed, or you notice a weight gain; watch also for overly aggressive males. Copulation is accompanied by […]
[…]insect larvae, snails, crabs, algae and other organisms. The newly described frogs deposit their eggs on the surface of the plant above the water, into which the tadpoles drop upon hatching. The tadpoles, at a mere 3 millimeters in length, are also among the world’s smallest. Other Recent Discoveries A […]
[…]to a fatal infection known as egg peritonitis. It is important to note that females may develop eggs even if unmated, and that captives may produce several clutches each year. The eggs may be incubated in moist vermiculite at 82-86 F for 60-85 days. Please post below for further […]
[…]the Rosy Boa can be. They are live bearers, so breeders are spared the trouble of incubating eggs, and the 3-6 young typically produced are large enough to accept pink mice. Garter Snakes, Thamnophis spp. Over 30 species of these attractive, interesting snakes may be found in North America. Garter […]
[…]vernal (temporary) ponds in which to reproduce, as these cannot support fishes, the main enemy of eggs and larvae. In many cases, the “ponds” are mere depressions that fill with rain for a few weeks, and then dry out. One of my favorite sites was just such a pond on […]
[…]not to puncture veins, as their common name suggests! The unique tadpoles seem to hatch from eggs deposited in water-filled tree hollows high above the ground, but beyond that we know nothing of their natural history. Tadpole Teeth Tooth structure is an important means of identifying tadpoles, especially given that […]
[…]I mentioned began calling in response to increased showers, but the females did not respond with eggs. As most green treefrogs in the trade hail from Florida and Louisiana, a dry period followed by frequent misting and a rise in temperature of 5-10 F might do the trick. You can […]
[…]of Grenada report that female Mexican lance-headed rattlesnakes frequently consume infertile eggs and non-living young after giving birth. This is said to be the first documented case of cannibalism among rattlesnakes (please see below for my observations, however). Interestingly, with a sole exception, the females did not consume young that […]
[…]and is listed on CITES Appendix I. Reproduction Mating takes place in May-June, with 5-16 eggs being laid (buried in the sand) in June-August. In the wild, females usually breed every other year, but captives may lay a clutch yearly. Diet, Natural and Captive Chuckwallas are largely herbivorous, consuming the […]
[…]to uncover further surprises. Further Reading Vibrations are also important to this species’ eggs – they hatch spontaneously when attacked by snakes. Read more here. For more info on frog hand signals, please see The Unique Panamanian Golden Frog. Red eyed Tree Frog (second image) image referenced from wikipedia and originally […]
[…]is known of the Fire Skink’s reproductive biology in the wild. Captives produce 4-9 eggs, which are buried in moist substrate and hatch in approximately 50 days. Males are territorial and fight if housed together. Diet Snails, spiders, centipedes, beetles, locusts and other invertebrates; fallen fruit, carrion, frogs, lizards; may […]
[…]suffocation as the cause of death. Reproduction Females guard and incubate clutches of 20-100 eggs, which hatch in approximately 90 days. Hatchlings typically measure 16-24 inches in length. Taxonomy Many herpetologists classify the African Rock Python as Python sebae. Others recognize two subspecies – P. s. sebae, the Northern African […]
[…]well on infrequent feedings (their metabolisms are incredibly slow) of minnows and earthworms, and eggs were produced a few times. One or two clutches hatched, but the tadpoles always expired quickly. Captive breeding was a priority, as they are found only in Lake Titicaca, 12,000 feet above sea level on […]
[…]both produced quite large clutches, as I remeber – perhaps they were in a hurry!). Seven to 15 eggs (average 10), laid at 3-5 minute intervals, will be deposited in the nest hole, which is then carefully re-filled with soil through the use of both front and rear legs. […]
[…]Like most of its relatives, it searches moist leaf litter for snails, slugs, frog and salamander eggs and, perhaps, earthworms. Unfortunately, it is already facing an uncertain future, as iron ore mining may destroy its only habitat. It was named in support of local people who oppose further destruction of […]
[…]find any water scorpions, diving beetles or other common aquatic insects, but many over-winter as eggs, and so are difficult to locate prior to maturity. Happily, the red-winged blackbirds were out in force, and calling all day. I’ve observed these early harbingers of spring to return to NY as […]
[…]miles) area in Dade County. Among the captured snakes was an 15.5 foot-long adult female with eggs forming in the oviduct, reproductively active males, and several young-of-the-year. The ages and sexes of these snakes, and their proximity to one another, suggests a breeding population. Also notable is the fact that […]
[…]enough to obtain a breeding pair, you’ll have your hands full…healthy females may lay 20-70 eggs at a time, twice each year! Incubation time averages 6 months at 77 F, and sexual maturity may be reached by 5 months of age. The Smooth Chameleon The range of East Africa’s Smooth […]
[…]and other plants, where they mature. Females of several species return to deposit unfertilized eggs as food…some even wait for a signal from the tadpole before laying (please see article below). Artificial Tadpole-Rearing Pools Keeping these little gems in a terrarium furnished with live plants is ideal, but not everyone […]
[…]its diet to toads, the Madagascar Giant Hognose takes toads, frogs, lizards, small mammals and the eggs of tortoises, lizards and birds with equal gusto. Captive adults readily accept mice and rats, but hatchlings often prefer lizard or toad-scented rodents at first. In time, they can be weaned-over to un-scented […]
[…]female roaches are, in essence, “trading” flight for the ability to produce additional eggs. Males of some species are though to retain the power of flight so as to be able to cover more ground when searching for mates. A description of the journal Cockroach Studies, along with photos of […]
[…]as its east coast cousin, the Western Hognose takes toads, lizards, other snakes, rodents and the eggs of turtles, lizards, and birds with equal gusto.; locusts and other large invertebrates have also been reported as food items. I recall one study in which this species was identified as the major […]
[…]experienced lizard-keepers and zoos. Egg-Laying Swifts Several of the more popular Swifts produce eggs. Included among these are the Eastern Fence Lizard (S. undulatus), the Western Fence Lizard (S. occidentalis) and the Desert Spiny Lizard (S. magister). Please write in if you would like information on these and other oviparous […]
[…]fish food), can serve as the basis of their diet. Fire-Bellies often surprise their owners with eggs, offering an excellent introduction to amphibian breeding. Note: all newts produce skin toxins that can be harmful, and for certain species fatal, if swallowed; children must be supervised. Leopard Gecko, Eublepharis macularius […]
[…]Breast Spot Frog: one of the world’s smallest frogs. Macaya Burrowing Frog: unique in laying eggs below ground; there is no tadpole stage. Hispaniolan Crowned Frog: sporting a head ringed by bumps, this arboreal frog breeds in Bromeliads. Further Reading Conservation Update: the Lake Titicaca Frog Haiti’s Lost Frogs; includes […]
[…]Crickets breed readily, with the best results being had at 82-90 F. Females will deposit their eggs in bowls stocked with 2 inches of moist sand or earth. These should be removed often, as adults love snacking on their own eggs. Hatching occurs in 1-2 weeks at 85-90 F, and […]
[…]miles) area in Dade County. Among the captured snakes was an 15.5 foot-long adult female with eggs forming in the oviduct, reproductively active males, and several young-of-the-year. The ages and sexes of these snakes, and their proximity to one another, suggests a breeding population. Also notable is the fact that […]
[…]time to look and learn. Frogs that dye human skin yellow, snakes that specialize in eating only eggs or snails, iridescent skinks sporting tails twice their body length…the list is simply astounding. Today I’ll highlight a few that have especially captivated me; please post your own favorites (whether covered here […]
[…]territorial disputes. Mating coincides with the start of the rainy season. Females bury 8-14 eggs in the ground, and may produce 2 clutches each year if food is plentiful. The eggs hatch in approximately 69 days and the young average 2 inches in length. Hatchlings stay in close proximity to […]
[…]of these have evolved a primitive placenta. Many oviparous (egg-laying) skinks guard their eggs, and there is evidence that females may move the egg clutch in response to disturbances. A Few That Break the Mold Quite a few skink species depart from the group’s typical body plan and lifestyle. New […]
[…]prey, which includes a surprisingly-wide array of creatures. Rodents, rabbits, birds and their eggs, lizards, frogs and even small turtles are taken. Snakes, including rattlesnakes and other venomous species, feature heavily in the diets of some populations. I have first-hand experience with impressive biting power packed by most rodents, and […]
[…]tend to transform at the same time, and often form huge swarms. Most species mate and lay eggs without feeding, and expire in 1-3 days. This lifestyle renders it difficult to rear Bloodworms in captivity. I did have a colony established for a time in a large zoo exhibit, but […]
[…] Females scrape together a mound of dead vegetation in which to deposit their 20-30 large eggs, but appear not to guard the nest or young. Eggs are likely lost to wild pigs, Water Monitors and other predators. Conservation The False Gharial is extinct in several countries and is threatened […]
[…]and as a breeding site, Vampire Crabs have cut all ties with the ocean. Females carry their 20-50+ eggs about until they hatch or are ready to hatch, whereupon they are deposited in shallow pools of fresh water. Crab enthusiasts will be especially happy to learn that Vampires have […]
[…]were a daily occurrence – how they managed to breed I’ll never know (literally, since the eggs incubated unseen within the exhibit!). A susceptibility to fungal and bacterial infections, often centered on the carapace, adds to the difficulties involved in keeping these unusual turtles. Nile Softshell Turtle (Trionx triunguis) […]
[…]be more widespread than is generally believed. Reproduction Mating occurs in the spring and 2-9 eggs are laid in the summer. The young, 12-15 inches in length, hatch after an incubation period of 2-3 ½ months. Hatchlings feed mainly upon small lizards. Diet Lizards are said to be favored, especially […]
[…]many tadpoles will not survive even under the best of circumstances. Some turtles lay infertile eggs, apparently to satiate predators and take attention away from viable ones – I have no hard evidence, but I would not be surprised to learn that weaker tadpoles serve a similar function. Feeding Tadpoles […]
[…]a single beetle may consume 7-10 caterpillars each day, and each female produces 800-1,000 eggs. Captive Husbandry Caterpillar hunters make fascinating terrarium subjects. Clad in beautiful iridescent colors, most are not at all shy about revealing a range of interesting behaviors. They do well at normal room temperatures and can […]
Surinam toads are well known for their bizarre reproductive strategy (please see article below), unusual appearance, large size and unique habitats. They make very interesting pets but, as most in the trade are wild-caught, present a few problems when first introduced into the aquarium. Last time we took a […]
[…]season, the plastron becomes somewhat flexible to allow for the passage of the 2-4 unusually-large eggs. Females sometimes have difficulty passing their eggs, especially if the diet lacks sufficient calcium. Gravid females usually become restless and may refuse food. They should be removed to a large container (i.e. 5x […]
[…]snake breeders start off with live-bearing species, so as to avoid the necessity of incubating eggs. In the Family Boidae we find a wide range of possibilities, one of the most popular of which is the beautiful Rainbow Boa (Epicrates cenchria). Although not as widely kept as its much larger […]
[…]ago – they have bred several times and show no signs of slowing down. They do not lay eggs, but rather give birth to live larvae. Some populations, particularly those living at high elevations, give birth to fully formed little salamanders, skipping the larval stage completely. How I Keep and […]
[…]upon the latitude, with mating concentrated in the spring. The average clutch contains 2-5 eggs (range 1-9); 4 clutches per year may be produced in the southern part of the range. The eggs are deposited in a shallow nest (muskrat lodges are favored in some areas), within decaying logs, or […]
[…]herpetologists Mary and George Rabb. An Unusual Degree of Parental Care Females deposit 60-200 eggs in pools of water located in tree hollows above ground. The tadpoles are large, and in time their body mass may exceed the volume of water held in the cavity. Perhaps this is why such […]
[…]minute pools to catch mosquito larvae, crabs that never descend to earth, tadpoles that are fed eggs by their mothers, salamanders observed nowhere else – the list of Bromeliad-dependent creatures is endless, and can provide a lifetime of interest to those who wish to study and keep them. Further Reading […]
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