A recent study from the National Autonomous University of Mexico (UNAM) shows in 1998 there were 6,000 axolotls per square kilometer in Xochimilco. By 2008 that figure had plummeted to 100. And in 2014 researchers found less than one per square kilometer.

There are at least three major causes for its decline: urbanization, water pollution and the massive invasion of exotic predator fish like carp and tilapia, introduced by the Mexican government in the 1980s to help feed local communities. From the first few thousands they introduced, there are now an estimated 900 tons of fish in these canals.

“It’s an amazing amount. About 98 percent of the biomass in the water is made up of just these two fish, and they destroy everything,” said professor Luis Zambrano, an ecologist at UNAM who studies Mexican salamanders and the deterioration of their environment. “The government didn’t know what they were doing. They’ve altered the food chain and the whole ecosystem.”

By examining research on global patterns of amphibian diversification over hundreds of millions of years, De Lisle and Rowe discovered that “sexually dimorphic” species – those in which males and females differ in size, for example – are at lower risk of extinction and better able to adapt to diverse environments.

Their work suggests the ability of males and females in sexually dimorphic amphibian species to independently evolve different traits – such as size – helps them survive extinction threats that kill off others, says De Lisle.

He says classic ecological theory would not have predicted that about amphibians, a class of vertebrates that includes frogs, toads, salamanders, newts and caecilians.

The conventional school of thought believes different-sized sexes of the same species take up more resources and are less able to adapt and diversify than species where ecologically relevant traits like size are basically the same between males and females.

Venom research is a large field, especially due to the pharmaceutical potential of the venom proteins. The idea here is that venom proteins are capable of affecting the body's cells. Excessive amounts can be harmful and even lethal in some circumstances, but if the right dose is used, the venom proteins can be used to treat certain diseases. Snake proteins that normally cause prey to bleed can be used in small doses to treat blood clots, for example.

In the same way, work is currently being done to develop spider venom proteins to provide pain relief. The Aarhus researchers focused on gila lizards, and these are currently being used in pharmaceutical contexts. Gila lizards produce exendin-4, a small venom protein used in the treatment of diabetes and obesity, which is a competitor to Victoza - produced by Novo Nordisk.

To study the impact of these depressions on the reproductive success of the frogs, scientists based at the University of Vienna installed a series of plastic bowls to collect rainwater at regular intervals in a patch of rainforest in French Guiana and monitored frog populations in their test and control plots.

It was found that the frog populations expanded rapidly in both the areas with the bowls and nearby plots, from 148 frogs the season before the bowls were installed to 246 frogs two years later, while no increase was seen in plots far away from the man-made peccary wallows.

“It’s an honor and a privilege to work with the largest living reptile and largest terrestrial predator on the planet,” Robert tells me in the singsong tone of his television-ready family. “An awesome animal that roamed the primeval landscape for millions and millions of years.”

Daisy’s sawtooth tail whips the prone boy to the left. “The jaw pressure of the crocodile is incredible—3,000 pounds per square inch!”

Daisy’s tail whips him to the right. “I so admire the crocodile’s ability to kill with just its teeth. It’s quite amazing!”

Robert’s 16-year-old sister, Bindi, looks on solicitously. An actor, singer, game show host and, last year, a People cover girl, she’s confirming Daisy’s gender by inserting a finger into its cloaca and feeling around for genitalia. “It’s a girl!” she says. Her smile conveys a disarming buoyancy. “Here’s an animal that many people think is just a stupid, evil, ugly monster which kills people. That’s so not true!”

Lead author Bruno Ferronato said more than 100 animals died because the fence restricted their natural movement patterns.

"Usually they will move to other ponds, usually during springtime, looking for ponds to feed," the University of Canberra researcher told 666 ABC Canberra.

"The fence is interrupting with the migratory habits of turtles. When they're trying to move between ponds they're hitting the fence and some of the animals are dying there."

In a recent issue of GENETICS, Darin Rokyta and colleagues reported the results of a large survey of venom diversity across two snake species sharing nearly identical ranges and similar habitats in the southeastern United States. As expected, the mix in one species—the eastern diamondback rattlesnake—varied considerably from place to place. But the eastern coral snakes told a completely different story. In contrast to its rattlesnake neighbors, no matter where a coral snake came from, its venom was always the same.

Rokyta says the team was shocked by this lack of variation. “This is the first time anyone has looked at venom variation at this scale, and everybody has assumed that the co-evolutionary arms race would cause local populations to diverge quickly.”

The results not only challenge this assumption, they provide crucial information for rattlesnake conservation and coral snake antivenom development.

Clark County and the Nevada Department of Wildlife spent about five years trying to get the rare frog to thrive at a pond along the Muddy River. But nearly 2,000 frogs later, the county scuttled an agreement Feb. 3 with state wildlife officials after multiple failed efforts. It’s likely now that no frogs live at the pond, county officials say.

In a way, frogs and other amphibians are a barometer of an area’s overall environmental health. Their moist skin doesn’t take kindly to environmental hazards in the air. Nor will frogs survive if water, the lifeblood of their natural environment, disappears.

The relict leopard frog’s plight isn’t unusual in the amphibian world. Amphibians throughout the U.S. and worldwide are in decline, according to a 2013 federal report.

But don’t count out this particular frog just yet. Officials aren’t giving up on the tiny 2-inch frog, believed to be extinct in the 1950s.

The county hasn’t put all of its frogs in one pond.

No, this is no camera trick: this frog is indeed riding this rhinoceros beetle, cowboy-style.

Indonesian wildlife photographer Hendy Mp captured the scene near his house in Sambas in Kalimatan Barat in Indonesia, UK's Daily Mail reported.

The Daily Mail report said the "rodeo"—in which the Reinwardt's Flying Frog jumped on top of the woodboring beetle and put its front leg in the air—lasted no more than five minutes.

A training workshop is being held today in Midhurst in collaboration with the Amphibian and Reptile Conservation Trust. The free raining will be provided on a number of aspects of toad conservation.

Common toads are very particular about their breeding sites, often returning to ancestral breeding ponds each year from hibernation areas. They will follow the same migratory route, often moving as an entire colony, which will inevitably lead to having to cross roads.

The discovery in Monterrey, the capital of Nuevo Leon, was the result of a joint investigation by Profepa and the Attorney General's Office.

Officers found a freezer containing 40 dead animals, among them 17 python regius snakes, two sugar gliders (Petaurus breviceps), two eastern grey squirrels (Sciurus carolinensis), two black-tailed prairie dogs (Cynomys ludovicianus), one squirrel monkey (Saimiri sciureus) and one cotton-top tamarind (Saguinus Oedipus).

They also found one parrot (Psittacidae), two common kestrels (Falco tinnunculus), three water monitor lizards (Varanus salvator), two swamp crocodiles (Crocodylus moreletti), four Burmese pythons (Python bivittatus), one corn snake (Pantherophis guttatus) and red-eyed tree frogs (Agalychnis callidryas).

Meanwhile, even as it is struggling to raise the money needed for undertaking its initiatives, the facility also has to rebuild a portion of it which would be affected by the ongoing road widening work.

“The front counter and the entrance office will go. So we are planning to revamp the frontage and three exhibits near the entrance first,” said Zahida.

The MCBT and Center for Herpetology was started in 1976 by Herpetologist and reptile conservationist Romulus Earl Whitaker, and was the first crocodile breeding centre in Asia, set up to save the dwindling crocodile population and preserve snakes.

"From our perspective the most important thing is now the state is going to have to be consulted on for any development that happens within the flat-tailed horned lizard habitat," she said.

There is dispute over whether the species is in fact declining, and how many live in the dunes. A biologist with the Bureau of Land Management, Larry LePre, told the Yuma Sun in December the dunes aren't prime habitat since they don't have many of the harvester ants which are the basis of the lizards' diet, and there's no reliable data to suggest they're going up or down in numbers, mostly because they're difficult to detect.

The BLM, which maintains the Imperial Sand Dunes Recreation Area, is part of a joint Rangewide Management Strategy for the species covering almost 500 acres in California and Arizona. The center's petition contends this is inadequate since most of the land is open to off-road vehicle use.

Skinks, geckos, frogs, pygmy pythons, and a dead death adder - one of the most venomous snakes in the world - were found in the staggering haul.

A number of invertebrates and 33 dead reptiles, which appear to have been tagged for use as specimens, were also discovered amongst more than 157 reptiles and amphibians being transported out of Western Australia.

Four men were arrested and charged - two from Russia and two from the Czech Republic - at Perth International Airport on February 6 after an investigation by the Australian Customs and Border Protection Service and the WA Department of Parks and Wildlife.

The government-funded study took place at the St. Augustine Alligator Farm Zoological Park over the past four years.

"Alligators live in a pretty inhospitable environment, “ said Barney Bishop, one of the lead researchers. “Many of them live in stagnant water where there is lots of bacteria. And while they are predators, they also eat carrion, so they must have a robust immune system to fend off infection in these situations."

The researchers were able to isolate those infection-fighting peptides in the alligator blood. The hope is to use alligator blood as battlefield medicine. Soldiers wounded in battle are vulnerable to bacteria, such as MRSA. Alligators have a natural resistance.

Typically, female poison dart (dendrobatid) frogs lay eggs on land. Once the tadpoles hatch, male frogs, their fathers, then carry them to small nursery pools.

But these pools may be short-lived, and the frogs are too tiny to dig their own.

Enter the peccary, a species of wild pig common in Central and South America.

Peccaries like to fling turf, specifically by digging out wallows – their own individual mud spas.

As they do so, they can radically transform the rainforest floor, creating pools of water that are just the right size for prospective frog parents.

“Surveys confirmed the presence of a medium-sized breeding population of great crested newt within the pond on site, and individual long-eared and common pipistrelle bats roosting in the agricultural buildings as well as the presence of grass snake on site.

“This being the case; the proposed development will result in the loss of a great crested newt breeding pond, confirmed bat roosts, amphibian/reptile suitable habitat and mature trees.”

It states that before planning permission can be granted the newts and bats must be "looked after" and that the club must "demonstrate that the favourable conservation status of the species will be maintained within the whole of the site".

Woo and Rieucau conducted a playback experiment using computer animations of lizard displays. They created three simulated animations of lizards that differed in their shape and skin texture and performed the displays either with natural syntax or reversed syntax. There was the “cyberlizard,” which had normal shape and skin texture; a lizard with normal shape but without realistic skin texture; and an object shaped generally like a lizard but lacking texture.

The researchers found the order of the actions was critical for signal recognition. Even the animated lizards with abnormal shape and texture elicited responses from the jacky dragon subjects, as long as the actions were in the correct order.

The lizards responded to animations with correct syntax by making social signals of their own. These included aggressive signals like fast head bobs or the entire visual display pattern (tail flick, quick arm wave, and push-up body rock) or submissive displays like slow arm waves and slow head bobs.