Tag: dogs

Man’s best friend threatens endangered species’ survival

Dog attacks on mountain tapirs in Colombia highlight a growing threat to vulnerable wildlife.

Researchers who captured footage of dog attacks on endangered mountain tapirs in Colombia are calling for action to protect threatened wildlife.

Using camera traps, a team from WILD Campo Silvestre, the Tiger Cats Conservation Initiative, and the Fundación Caipora captured images of two attacks in the Campoalegre Soil Conservation District, Santa Rosa de Cabal in a period of two months.

Three black and white camera trap images of dogd chasing a mountain tapir in a forest.
Photographic evidence of domestic dogs chasing mountain tapirs in a private protected area of the Central Andes of Colombia. Credit: Cepeda-Duque et al.

The cameras caught domestic dogs (Canis lupus familiaris) chasing and attacking mountain tapirs (Tapirus pinchaque) in a protected area of the Central Andes. These images were subsequently published in a research paper published by the open-access journal, Neotropical Biology and Conservation.

The study offers insights into the impact of domestic dogs on wildlife, particularly on species of conservation concern such as the mountain tapir. The authors highlight the urgent need for population management and control of domestic dogs inside and around protected areas.

A map representing the area surveyed by the camera traps that detected the two events of dogs chasing and attacking mountain tapirs in the private natural Reserve “WILD Campo Alegre” situated at the north-eastern extreme of the Campoalegre Soil Conservation District, Santa Rosa de Cabal, Colombia.
Area surveyed by camera traps that detected the two events of dogs mountain tapirs in the private natural reserve. Credit: Cepeda-Duque et al.

Conservationists recently implemented measures such as neutering and vaccination programs for stray and owned dogs in the vicinity of natural reserves to protect the threatened clouded tiger cat (Leopardus pardinoides) in the region. The research team call for these measures to be extended to WILD Campo Alegre and surrounding lands.

An arial view of Campoalegre Soil Conservation District, Santa Rosa de Cabal, showing forests on rolling hills.
Campoalegre Soil Conservation District, Santa Rosa de Cabal. Credit: Camilo Botero.

“Domestic dog incursion into protected areas is a global threat to wildlife that is difficult to mitigate because of the inherent social dilemma of controlling dog populations,” says Juan Camilo Cepeda-Duque, lead author of the study.

“Dogs can contribute to the extinction of vertebrate species, can imbalance the trophic dynamics amongst predator guilds and even have the potential to collapse entire ecological communities,” he continues.

An endangered mountain tapir photographed in a dark forest.
Mountain tapir (Tapirus pinchaque). Credit: Camilo Botero.

The mountain tapir is an emblematic herbivore of the Andean cloud forest, globally classified as ‘Endangered’ according to the IUCN Red List due to habitat loss and poaching. The presence and aggressive behaviour of domestic dogs not only threaten the physical wellbeing of these tapirs but also their reproductive performance, foraging efficiency, and overall population health due to increased stress, potential for disease transmission, and alterations in habitat use.

The research team highlight that their observations are not isolated cases, as locals previously reported the same dogs chasing and attacking mountain tapirs and cattle. The conservationists are also concerned that they detected no juvenile mountain tapirs in the survey.

Study authors Juan Camilo Cepeda Duque (left) and Eduven Arango Correa (right) relaxing in a forest.
Study authors Juan Camilo Cepeda Duque (left) and Eduven Arango Correa (right) on site. Credit: Camilo Botero.

The NGO WILD Nature Foundation has established a new protected area in the northern extreme of the Campoalegre Soil Conservation District, with the target of protecting the habitat of endangered mountain tapirs and the last remnant populations of the fuerte’s parrot (Hapalopsittaca fuertesi) in the region. Currently, the reserve is carrying out an unprecedented restoration program, planting thousands of trees to recover the land once cleared for the establishment of cattle ranching.

Original source

Cepeda-Duque JC, Arango-Correa E, Frimodt-Møller C, Lizcano DJ (2024) Howling shadows: First report of domestic dog attacks on globally threatened mountain tapirs in high Andean cloud forests of Colombia. Neotropical Biology and Conservation 19: 25-33. https://doi.org/10.3897/neotropical.19.e117437

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Man’s best friend could be a jaguar’s next meal: A case study from the Mexican Caribbean

Events of jaguars predating on and attacking dogs are poorly documented throughout the Americas. Researchers from Mexico and Germany report in detail jaguar attacks on 20 dogs at a tourist site in the Mexican Caribbean. In addition, they describe an initiative proposed by locals as well as national and international NGOs to prevent human-jaguar conflicts due to pet predation. The study was published in the open-access journal Neotropical Biology and Conservation.

Mahahual is a small fishing village in the Mexican Caribbean that receives a large number of tourists every year. Over the past 15 years, its population has increased rapidly, and, as a result, people have started to settle in areas away from the main center of the village, sometimes encroaching on jaguar habitats. As most of those people keep guard dogs on their properties, jaguars have taken advantage of this situation by wandering near people’s houses at night, and sometimes those dogs end up as a night-time snack for the big cats.

A jaguar is photographed wandering around houses looking for dogs. Photo by Víctor Rosales

Unlike jaguar attacks on livestock, attacks and predation on other domestic species such as dogs have only been documented anecdotally (through interviews or from remains found in faeces). Such attacks can indeed lead to pet predation conflict, which can ultimately have a negative impact on the jaguar populations. Attachment to pets may lead humans to start killing the big cats, which is of particular concern for an endangered species like the jaguar. Furthermore, it is possible that a wide range of pathogens may be transmitted from dogs to jaguars, further threatening the health of jaguar populations in Mahahual.

A dog injured as a result of a jaguar attack in Mahahual, Quintana Roo, Mexico. Photo by Víctor Rosales

This is why a multidisciplinary team made up of veterinarians, conservationists, locals, NGOs (Aak Mahahual A.C. and International Fund for Animal Welfare (IFAW)) and researchers (El Colegio de la Frontera Sur and Universidad Tecnológica de Calakmul), led by Dr Jonathan Pérez Flores, began investigating the occurrence of jaguar predation and attacks on dogs at the Mexican Caribbean tourist site from almost 10 years ago. Their research was just published in the open-access journal Neotropical Biology and Conservation.

According to their report, the behaviour of Mahahual’s jaguars resembles that of Indian leopards, which have already turned dogs into an important component of their diet, preferring them over livestock. Jaguars and leopards usually attack from a blindside, biting the dogs on the neck or head to avoid counterattacks. Similarly to leopards, jaguars attack at night and kill more dogs during the dry season. This is likely due to the fact that it’s easier for jaguars to hunt dogs than their natural prey: armadillo, lowland paca, brocket deer, white-tailed deer. Furthermore, the latter are less available during the dry season.

One of the night houses built by the people of Mahahual, Aak Mahahual A.C. and International Fund for Animal Welfare (IFAW). Photo by Francisco Rubén Castañeda

In 2017, the people of Mahahual partnered with Aak Mahahual A.C. and IFAW to build protective night houses made of wood and wire mesh meant to keep dogs safe at night. So far, they’ve built 38 such houses to prevent jaguar attacks. Sterilisation and vaccination campaigns have also been intensified since late 2020 to prevent the transmission of diseases between the two species.

Thanks to this study, we now have a better understanding of the adaptability and persistence of jaguars in human-dominated landscapes and the impact of dog predation by jaguars. However, the authors call for more research in the area to help paint the full picture.

Research article:
Carral-García M, Buenrostro I, Weissenberger H, Rosales V, Pérez-Flores J (2021) Dog predation by jaguars in a tourist town on the Mexican Caribbean. Neotropical Biology and Conservation 16(4): 461-474. https://doi.org/10.3897/neotropical.16.e68973