Social network analysis uncovers hidden social complexity in giant pandas

Analyses of animal social networks have traditionally been conducted on species that exhibit social behaviors such as group living, whereas relatively less work has been done on species that are thought of as solitary, are cryptic, and that communicate through scent-marking cues. We employed noninvasive fecal genetic sampling, conducted from March 2015 to February 2016, […]

Survey on gastro-intestinal parasites of captive sun bears in Malaysia

This study aimed to investigate parasitic infection in captive sun bears (Helarctos malayanus) in Malaysia from December 2018 to May 2019. We collected 58 fecal samples from sun bears housed in the National Zoo, Taiping Zoo Night Safari, Lok Kawi Wildlife Park, and Bornean Sun Bear Conservation Centre. We analyzed the samples using modified fecal […]

Home range estimate of sloth bear using noninvasive camera-trap data

Estimating home range size is an important aspect of ecological studies that helps in understanding species biology. The myrmecophagous sloth bear (Melursus ursinus) is one of the least studied large carnivores and is found in the Indian subcontinent with India being its stronghold. Despite its wide distribution in India, only one study has estimated its […]

Anthropogenic waste ingestion of Southern Beaufort Sea polar bears, Alaska (2010-2020)

We report on anthropogenic waste ingestion and associated foreign-body gastric pathology in polar bears (Ursus maritimus) within the North Slope Borough, Alaska, from stomach content analysis of 42 bears during 2010 to 2020. User plastics and rubbish other than plastics were observed in 28.6% (12/42) and 11.9% (5/42), respectively. Acute gastritis was present in 33.3% […]

Andean bear gastrointestinal parasites in Chingaza Massif, Colombia

The Andean bear (Tremarctos ornatus) is the only species of the Ursidae that inhabits the Andes in South America. The natural history of the species and health issues related to infectious diseases, particularly the presence of gastrointestinal parasites (GIP), is unknown. To determine the prevalence, infestation, and richness of GIP in fecal samples of wild […]

Human-brown bear conflicts in the North of Iran: Implication for conflict management

Identifying factors that influence human-wildlife conflict and people’s attitudes toward carnivores can help managers mitigate conflicts and improve wildlife management. In this study, we used a questionnaire and conducted 230 interviews to evaluate some aspects of conflicts between local communities and brown bears (Ursus arctos) in Mazandaran Province in the Alborz Mountains in northern Iran […]

Video-documentation of true and borderline tool use by wild American black bears

Animal tool use has been documented for a variety of wildlife, but few studies have evaluated tool use by bears. We used long-term video data to observe and classify behaviors of wild American black bears (Ursus americanus) in western Montana, USA, during 2012-2022. We present video-documentation of true and borderline tool use by multiple individuals. […]