That Reptile Blog – Reptile, Amphibian and Exotic Pet Care and Information

As a child, my information on the Goliath Frog, Conraua goliath, was limited to a few brief sentences hidden away in various books, but this was enough to spark my interest.  Eventually, a life-sized sculpture of one at the American Museum of Natural History (please see photo) gave me some idea of just how impressive a creature it was, and my desire to learn more intensified.  Happily, I found a job at the Bronx Zoo shortly after a group of Goliath Frogs arrived there from Cameroon, and I was able to indulge my passion.  One of my new charges spanned 25 inches with legs extended…nothing, not even the enormous African Bullfrogs and Marine Toads (or, for that matter, Leatherback Turtles!) that I had already handled prepared me for the sight of that amazing animal.

The Goliath Frog Exhibit

I first started working with Goliath Frogs in 1983, at which time we knew little about their natural history or captive needs. Unfortunately, not much has changed since, although field research completed in 1985 (Sabater-Pi, Contribution to the Biology of the Giant Frog, Amphibia-Reptilia, 6(2), 143-153) has filled in some of the blanks.

The new Goliath Frogs, collected as adults in Cameroon, were shy and high strung, and prone to wild, injury-producing leaps when disturbed. We assumed, therefore, that the zoo’s noisy, crowded Reptile House would not prove an ideal location for their exhibit. Therefore, the curator commandeered an exhibit at the relatively-ignored Aquatic Bird House. Goliath Frogs are habitat specialists, so their exhibit was arranged accordingly, and outfitted with a waterfall and a swift, rocky stream bordered by dense thickets of live plants. In keeping with what little information was available, the water was maintained at a slightly acidic pH. Read More »

Mauritius, an island nation off the coast of southeast Africa, is best known to naturalists as the site of the Dodo Bird’s extinction (Mauritius also is, in a sense, the reason I was hired by the Bronx Zoo and spared life as a lawyer – see article below for the story!).  Herp enthusiasts, however, know it as the habitat of several unique reptiles, all of which are now very rare or extinct. But we can delight in some news just released by the Durrell Wildlife Trust – a new population of the Round Island or Keel-scaled Boas, Casarea dussumieri, will soon be established in the wild.  This unusual snake disappeared from nearly all of its range in the 1860’s, and its return is the culmination of 40 years’ worth of captive breeding and habitat restoration efforts.

Status and Conservation

The Round Island Boa is now confined to Round Island, a tiny speck of habitat where perhaps 500-1,000 individuals survive.  A single wild population and limited number of captives place it at continued risk of extinction.  The new population to be established on another Mauritian island (where the snake formerly lived) is a vital step towards ensuring the species’ survival.  Read More »

Unfortunately, animal abuse is a serious and surprisingly common problem in the USA. The applicable laws vary from state to state, and it can be difficult to determine which agency is responsible for enforcement. Regulatory agencies are often under-funded, so many rely upon citizen complaints. It is important, therefore, that concerned people learn how to proceed when they suspect that animal abuse is taking place. This is especially true where reptiles and amphibians are concerned, as they draw less interest than mammals, and mistreatment is difficult to detect by the inexperienced.  Please be sure to post your own observations below, and let me know if you need help in deciding how to report a problem.

State Law

Animal abuse is a crime every state in the USA, and most aspects of the problem are controlled by state law. This results in a confusing array of widely differing statutes and enforcement policies. Details, such as what constitutes abuse and how the laws are actually enforced, vary from state to state. Until recently (July, 2012), for example, an Indiana “festival” that allowed participants to twist off the heads of turtles for public amusement was held not to violate state law (please see below)!  In some states, live Tiger Salamander larvae are legally used as fish bait (please see this article), while in others they are protected as an endangered species. Read More »

A unique list of species facing imminent extinction was released by the Zoological Society of London at the recent (September, 2012) World Conservation Congress in Jeju, South Korea.  As a former member of several IUCN Species Survival Commissions, I was eager to learn the current thinking on the world’s most threatened creatures.  I’ll summarize below…any opinions you may have concerning “passed over” species would be most appreciated (please post below).

I’ve worked with several animals given the dubious honor of “World’s Rarest”, including the Batagur Turtle and Jamaican Iguana, and was heartened to see that zoos and private individuals are still contributing mightily to their protection.  However, many of listed species are poorly-studied, and draw few supporters.  Unfortunately, two such creatures that I’ve cared for in the past – the Chittenango Ovate Amber Snail and the Tanzanian Spray Toad – are now extinct in the wild. Read More »

In 1990, the IUCN’s Declining Amphibian Populations Task Force, to which I belonged, was one of the few large scale efforts addressing what is now known as the “Disappearing Amphibian Crisis”.  Today, with legions of biologists and hobbyists at work on the problem, we still do not fully understand why nearly 200 species have become extinct in the last 20 years – a rate 200x that of what might be “expected”.  But we do have some insights, one of which was highlighted in a recent journal article (Philosophical Transactions of the Royal Society (Biology) .  It appears that stress, much of which is in response to what we are doing to amphibian habitats, is worsening the effects of normal pathogens and diseases.

Parasites and Insecticides: a Confusing Scenario

As the reality of worldwide amphibian declines became apparent, herpetologists and private citizens began noticing increasing numbers of deformed and dead frogs. In 1995, school children in Minnesota made headlines when they found dozens of deformed frogs in a local pond. Since several chemicals are known to cause growth abnormalities, researchers began focusing on pollutants. At the Bronx Zoo, I worked with a veterinarian who studied African Clawed Frogs, and was amazed to see ovaries develop in males that had been exposed to Atrazine (a common insecticide). Read More »