Tiny toothies: saving pygmy crocs

Crocodiles. Love them or hate them, they are iconic creatures and an integral part of northern Australia. We have two species here, the infamous saltwater crocodile (Smaug says "hello"), and the somewhat more timid freshwater crocodile. Yet there is another type of crocodile that most people would never imagine exists, a pygmy - or dwarf - freshwater crocodile. They're still "freshies", but in miniature.
As their name implies, these crocs are very small even by freshwater crocodile standards. Normal freshies can grow to around 3 metres (10 feet) in length, but pygmy freshies top out at 1.5 metres (5 feet). Adults mature at much smaller sizes, such that females can start producing eggs when they reach a petite 70 cm (2.2 feet) long! When you consider that half the crocodile's length is its tail, it's easy to overlook them. Perhaps that's why they have received so little attention over the years.

Few people know of these crocs because they live way upstream in escarpment country, where crystal clear water flows through rocky gorges. It's very pretty, but there's not much food up there for crocodiles. Remarkably, they manage to survive anyway by staying tiny; the smaller they are, the less energy they need to live.

Life would be idyllic for pygmy freshwater crocodiles if it wasn't for one tiny problem: cane toads.
Cane toads are toxic to freshwater crocodiles (see the photo below) and are poisoning them in droves as they advance through the Northern Territory and into Western Australia. Pygmy freshies are even worse off, being more susceptible to toad toxins and having even less choice of food when toads appear in their backyard. Sadly, some populations may be about to vanish forever. We've been studying these little crocodiles since 2006 using mostly our own funding, so we've seen all of this first hand. But now we need your help.

All of that is true, but quite frankly it's because pygmy freshies are awesome, and we shouldn't sit by and watch them vanish forever. Humans were silly enough to introduce cane toads in the first place, so I believe we have a responsibility to clear up the mess and minimise the damage they do to the wildlife and habitats that make Australia such a unique place.
Help us to protect these tiny crocodiles so that when our children ask whether there is such a thing as a pygmy crocodile, we can take them into our backyard and show them a truly magical creature.
Project summary
It's also true that they're in grave danger of being lost forever, before we even get to know them. With your support, we'll be able to learn more about them and greatly improve our chances of saving them.
Frequently Asked Questions
A. Yes, we have confirmed this before: although there are genetic differences between pygmy crocodile populations and "standard" freshwater crocodiles, they fall inside the variation expected within a single species. But there are differences, very interesting ones: pygmy populations have a unique haplotype that's almost completely absent in downstream populations, and vice versa. We want to know why this is, and the data we've collected previously suggests a tantalizing hypothesis. We don't want to talk about it yet, mainly because we need to verify it first, plus we love a good cliffhanger. To resolve it, we need more tissue samples. If it's true, then it will explain a lot about these crocodiles and aspects of allopatric speciation.
The Challenges

The main aspect outside of our control is the genetic aspects; collecting tissue samples is straightforward, but their analysis will rely on third-parties. Although we will be using a reliable and tested genetic sequencing laboratory, we cannot control the time-frame for receiving the results. In a worst-case scenario, if nothing came of the genetics aspect, it would not influence the outcome of the rest of the project.
EGG
In addition to our thanks (and not being eaten by Smaug) we'll mail you a genuine Northern Territory crocodile postcard with a personal message of thanks from Adam. You'll also be included in the list of supporters on the final report.
HATCHLING
Access to the Pygmy Freshwater Crocodile Blog where we'll post updates throughout the project. These will include diary entries, essays on crocodiles, photos and videos. You'll also get a mention in the final report.
JUVENILE CROC
In addition to the HATCHLING reward above, we'll send you a PDF copy of the final scientific report once the study is complete.
JUVENILE CROC (MAILED)
Exactly the same as the JUVENILE CROC reward, but a nicely bound printed copy of the scientific report will be mailed to you with a personal letter of thanks.
ADULT CROC (extra orders)
A beautiful piece of silver jewellery with a cut-out design of a crocodile's footprint (Smaug was the foot model). These will be ordered based on demand, your choice of a silver pin or a silver pendant. Each comes in its own custom "saltwater crocodile" box. These will arrive after Christmas. You also receive the JUVENILE CROC reward above.
ARTY CROC
A beautiful canvas print of a crocodile by Dr David Kirshner. David is highly sought after as a scientific illustrator, with his reputation for intricately detailed and scientifically accurate artwork. David has kindly made one of his pieces available to be professionally printed on canvas (size 12" x 18" / 30 x 46 cm). You will also receive the JUVENILE CROC reward above.
Corporate Crocodile
Dr Adam Britton will visit your organisation and give a 1 to 2 hour presentation and Q&A session about crocodiles. Adam is a dynamic and entertaining speaker, and his talks are always memorable. We'll add your logo and/or organisation name wherever we have an acknowledgements page online, in digital or in printed form. Expenses are extra if non-local (ie. outside Darwin) travel is required.
DWARF FRESHIE
A unique opportunity to be part of the field project. Spend 5 days out in the field helping us conduct population surveys and catch crocs for tissue sampling and measurement. You must be available for the dates selected in late August 2016, and you must pay for your own travel expenses to Darwin and any accommodation in Darwin, but we will handle the rest. Must love camping in the middle of nowhere (in other words, you will be roughing it). Also includes blog access and the printed final report.
SMAUG
A once-in-a-lifetime chance to meet Smaug and dive with him, a privilege shared by a select few TV presenters. We'll film the whole thing for you. Dive as many times as you want within a day. You must be in good physical health and take part in a mandatory safety briefing. You must make your own way to Darwin, but we will cover all other costs for the day including food.
SOBEK
Spend three days with us in Darwin, spend a day diving with Smaug, come out with us and get a personal wild crocodile tour with leading crocodile experts Adam Britton and Erin Britton. Plenty of photo opportunities. Must make your own way to Darwin, but we will cover all other direct organisation costs. One additional guest is possible, but they must cover all their own expenses.
ADULT CROC
A beautiful piece of silver jewellery with a cut-out design of a crocodile's footprint (Smaug was the foot model). Twelve pieces were kindly donated by Bushprints Jewellery: 3 x silver pin, 3 x pendant, 3 x necklace and 3 x earrings. First come, first served. Each comes in its own custom "saltwater crocodile" box. We cannot guarantee that it will arrive before Christmas (we will try). You also receive the JUVENILE CROC reward above.