Leo: From Rescue Dog to Koala Conservation Partner

Leo, once a collarless dog roaming suburban streets with an uncertain future, now belongs to a specialist conservation team looking for evidence of koalas in forests and farmland throughout central Queensland. His journey demonstrates how an unwanted pet can become a vital ally for threatened wildlife.

From shelter dog to conservation recruit

Leo’s circumstances changed when he was six months old and a ranger spotted him wandering by himself. He was brought to a nearby shelter, one more lively black-and-white young dog in a country with far too many working-breed crosses needing homes.

Around the same period, veterinary nurse and conservation campaigner Jacqui Summers was seeking another detection dog. She required a partner with endurance, inquisitiveness and an almost compulsive enthusiasm for play - the very qualities that can leave dogs bored and unwanted in suburban gardens.

When Jacqui encountered Leo, she immediately noticed his drive and concentration. He fixated on toys, paid no attention to distractions and recovered quickly when faced with unfamiliar or unusual situations. While these characteristics could make him difficult as a household pet, they were perfectly suited to work involving long searches through heat, dust and tall grass.

Leo moved from concrete kennel runs to wide bushland, becoming a working dog with a purpose: help researchers find koalas.

After being adopted from the shelter, Leo became part of Jacqui’s Holy Scat detection-dog team, joining two seasoned dogs, Artemis and Skye. Together, they are Queensland’s only dedicated conservation dog unit concentrating on koala work.

The team behind “holy scat”

Holy Scat is built around one straightforward principle: wildlife can only be protected if its location is known first. In landscapes that have been heavily altered, this is considerably more challenging than it may appear. Koalas can occupy isolated patches of trees, travel at night and remain high above the ground in the canopy.

Rather than trying to spot the animals, Jacqui’s dogs are taught to detect what koalas leave behind: droppings, known as scat. These small, pellet-shaped droppings can be nearly impossible to see on the forest floor.

Using their sense of smell, the dogs can find scat in places a person would likely pass without noticing. Researchers can then map koala presence across broad areas and monitor how it changes over time.

Working dogs like Leo turn a tedious needle-in-a-haystack search into a focused mission guided by their nose.

Queensland’s first dedicated koala detection unit

Although detection dogs are already employed in several Australian states, Queensland has been less quick to use them. That is now beginning to change. Holy Scat works with CQUniversity and the national koala monitoring programme to survey central Queensland, where koalas face pressure from land clearing, heatwaves and disease.

A trained dog team in the field can greatly expand what researchers can achieve during brief survey trips. Rather than examining only a limited selection of trees, teams can search whole paddocks, creek lines and broken bushland corridors.

• Dogs locate koala scat concealed beneath grass and leaf litter.
• Scientists verify the scat and log GPS locations.
• The data is added to national databases monitoring koala populations.
• Findings inform habitat protection, wildlife corridors and future surveys.

How a nose beats satellite images

Modern koala research brings together advanced monitoring technology and traditional fieldwork. Drones, acoustic recorders and satellite imagery can identify suitable habitat and possible koala hotspots. However, each of these tools still requires ground truth: confirmation that koalas genuinely use the location.

That is the role Leo and his fellow dogs fulfil. Through repeated training and rewards, they learn to signal the smell of koala scat while disregarding the droppings of other wildlife.

In thick grass, tangled leaf litter and uneven ground, a koala dropping can vanish from human sight long before the scent fades for a trained dog.

Researchers say the contrast in effort is striking. A human surveyor could spend an hour searching a small area, repeatedly bending down with their eyes fixed on the ground. By monitoring the wind, a dog can cover the same area much faster, tracking faint scents drifting among the trees.

What training a conservation dog looks like

Leo began his training with basic scent-based games. Trainers matched the odour of koala scat with his preferred toy or food. Whenever he chose the correct container or location, he received an instant reward. The tasks gradually became more demanding, moving from controlled indoor exercises into outdoor bushland.

Before a dog is ready for fieldwork, it must be able to:

Skill	What it means in practice
Scent focus	Block out the smells of other wildlife and livestock to focus on koala scat.
Stamina	Continue working for hours in heat or drizzle without losing enthusiasm.
Clear signals	Give a reliable behaviour, such as sitting or pawing, when making a find.
Obedience	Immediately follow recall and stop commands close to cliffs, roads or livestock.

The dogs use GPS collars and, when required, cooling vests. Frequent rests and health assessments help protect their wellbeing. Jacqui’s experience as a veterinary nurse provides additional supervision, with close checks on hydration, paws and joints.

Why koala poop matters for policy

In Queensland, koalas contend with numerous threats, including habitat loss, vehicle collisions and chlamydia infections that may result in infertility and blindness. Government bodies and landholders require dependable information when deciding on logging restrictions, housing schemes and restoration work.

Scat surveys address fundamental questions: Are koalas there? How extensively are they distributed? Are numbers declining or becoming stable? Detection dogs can deliver these answers more quickly and with increased certainty, potentially shaping where scarce conservation funding is prioritised.

Each tiny pile of scat logged by Leo’s team becomes another data point in national models predicting the future of koala populations.

Where results reveal a sharp fall in detections within a particular area, this can prompt further examination of disease outbreaks, heat-stress events or recent land clearing.

Rescue dogs as conservation partners

Leo’s experience also reflects a developing trend: sourcing potential working dogs from rescue centres rather than breeding purpose-bred litters. Energetic crosses involving border collies, kelpies and cattle dogs may struggle in city homes but excel at search work.

For shelters, collaborations with detection programmes offer another route for dogs that could otherwise spend years awaiting the “right” adopter. For conservation organisations, the approach provides a reliable pool of possible recruits without promoting further large-scale breeding.

This system relies on thorough assessment. Fieldwork is not suitable for every rescue dog. Some are unsettled by loud sounds, while others become anxious around unfamiliar people or livestock. Instead of seeking perfection, trainers look for a combination of curiosity, toy drive and resilience.

What “scat” means and why scientists chase it

The term “scat” refers simply to animal droppings collected for scientific research. For many animals, gathering scat is easier and causes less stress than taking blood or tissue samples. Researchers can obtain DNA, hormone information and dietary evidence from a single pellet.

For koalas, analysing scat can indicate:

• Which individual or family group has used a site.
• Evidence of illnesses such as chlamydia.
• Diet quality, determined from leaf fragments and chemical markers.
• Contact with environmental pollutants, including pesticides.

Detection dogs operate as mobile sampling units. Teams can work from the ground with very little disturbance instead of trapping or tagging koalas, both of which involve stress and risk. This method is appropriate for sensitive sites and creates fewer issues for ethics approvals.

Where this approach could head next

The achievements of Leo and comparable dogs suggest several further applications. Other threatened Australian species, including gliders and quolls, also produce distinctive scat. Some programmes already teach dogs to locate uncommon reptiles, invasive plants and even fungal tree diseases.

As extreme heat and fire events place increasing strain on wildlife, swift surveys conducted by trained dogs could assist in finding survivors and directing rescue or habitat-support efforts. Conservation planners are already trialling mixed teams in which one dog searches for koala scat during the morning and invasive predators such as foxes in the afternoon.

For people living close to koala habitat, Leo’s story also has a practical message. Reporting wild koala sightings, joining community tree-planting days and supporting local koala-care groups all contribute to the same aim as detection teams: preserving sufficient healthy trees and connected habitat for the animals Leo now works so hard to locate.

For shelters, meanwhile, his path from unwanted stray to trained wildlife worker shows that the restless energy behind a kennel door may belong to a specialist nose waiting for work that finally fits.