Deep in the forests of central India, a four-legged detective named Maya is helping solve wildlife crimes that would otherwise remain mysteries. Maya is a Belgian Malinois—a breed known for its sharp nose and sharper focus—who works alongside forest rangers in Tadoba-Andhari Tiger Reserve in Madhya Pradesh. Her partner, 24-year-old handler Saurabh Nikhat, admits their relationship got off to a rocky start. "She bit me, and I had to take anti-rabies shots," he laughs. But today, Maya is one of the most valuable investigators in the reserve, sniffing out evidence that human eyes could never find.

Since 2008, WWF-India has trained more than 120 wildlife sniffer dog squads, each made up of one dog and two handlers. These teams work across 22 states, helping forest departments detect poaching and track down wildlife traffickers dealing in tiger skins, elephant ivory, pangolin scales, and other illegal products. The program grew partly because traditional skills are fading. Belinda Wright, who founded the Wildlife Protection Society of India in 1994, explains that in decades past, forest guards and local communities like the Baiga people could read jungle tracks like a book. "Those skills are disappearing," she says, which is why her organization has also trained more than 8,000 police, customs, and forest officers to recognize wildlife crimes.

The dogs themselves undergo rigorous training. WWF-India starts with young German shepherd and Belgian Malinois puppies, usually between three and six months old, working with government canine training centers. Each dog trains for seven to nine months, first learning to trust and obey their handlers, then moving on to detecting contraband like tiger bones, leopard skins, bear bile, and red sandalwood. Maya follows a strict daily routine of exercise and scent practice to stay sharp. Her handler explains that fresh scents and undisturbed crime scenes give her the best results, though rain, wind, and heavy human traffic can make her job harder.

That preparation has paid off in dramatic ways. Nikhat recalls one case where a young tiger was found dead in a stream. Water usually destroys scent trails, making such investigations nearly impossible. But Maya tracked the scent through the water and led officials straight to the man who had dragged the carcass from the river. In another case, informant tips led nowhere until a sniffer dog uncovered tiny bones near a villager's washing area, then followed the scent all the way back to the kill site.

In late June, forest rangers discovered a heartbreaking scene: twelve spotted deer and two sambar deer dead around a poisoned pond—one of the largest mass poisoning cases ever seen in the region. With no witnesses and no cameras, officials had few leads. That is when Maya's skills proved invaluable. She found hidden footprints, picked up a scent trail, and led investigators out of the forest, through open fields, and into a village house. There, they discovered fresh meat, bloodstains, animal hair, snares, and hunting equipment. Three suspects were taken in for questioning, and guards were posted to prevent other animals from drinking the poisoned water.

"Today, it would be very difficult for us to curb wildlife poaching without sniffer dogs," says Prabhu Nath Shukla, field director of Tadoba-Andhari Tiger Reserve. Nitin Desai from the Wildlife Protection Society agrees, calling sniffer dogs "the secret weapon of Indian wildlife authorities." "When there are no eyewitnesses, dogs find evidence that no human eye can detect," he says. For Maya and her fellow canine detectives across India, the fight to protect endangered wildlife is all in a day's work.