Evaluating mood changes in response to anthropogenic noise with a response-slowing task in three species of zoo-housed primates

In the zoo environment, anthropogenic noise is common as sound levels fluctuate due to visitors, construction, habitat design, and special events. In this study, changes in the mood of three species of zoo-housed primates in response to a loud annual event were evaluated with the response-slowing paradigm. In this paradigm, animals experiencing anxiety slow responses […]

The Characterisation of Underwater Noise at Facilities Holding Marine Mammals

A collaborative effort was undertaken to delineate underwater noise levels within holding enclosures at marine mammal facilities. Ambient noise levels were measured under normal operating conditions in the enclosures of 14 participating facilities. Facility habitats varied from ocean environments to fully enclosed pools. The means and standard errors of the noise pressure spectral densities measured […]

Do Audible and Ultrasonic Sounds of Intensities Common in Animal Facilities Affect the Autonomic Nervous System of Rodents?

In animal facilities, noises, often poorly controlled, occur over a wide range of frequencies and intensities. Evidence demonstrates that audible noise and ultrasound have deleterious effects on rodent physiology, but it is not known how they affect the autonomic nervous system (ANS). This study exposed 3 unrestrained, male, Sprague-Dawley rats daily to a 15-min white […]

Noise Exposure, Music, and Animals in the Laboratory: A Commentary Based on Laboratory Animal Refinement and Enrichment Forum (LAREF) Discussions

The effects of noise, in general, and music, in particular, on the behavior and welfare of animals in the laboratory deserve a great deal of empirical study. However, many laboratories must develop their current practices on the basis of sparse and conflicting data. With this commentary we seek to establish some of the factors that […]

The costs of chronic noise exposure for terrestrial organisms

Growth in transportation networks, resource extraction, motorized recreation and urban development is responsible for chronic noise exposure in most terrestrial areas, including remote wilderness sites. Increased noise levels reduce the distance and area over which acoustic signals can be perceived by animals. Here, we review a broad range of findings that indicate the potential severity […]

Noise in the Animal Shelter Environment: Building Design and the Effects of Daily Noise Exposure

Sound levels in animal shelters regularly exceed 100 dB. Noise is a physical stressor on animals that can lead to behavioral, physiological, and anatomical responses. There are currently no policies regulating noise levels in dog kennels. The objective of this study was to evaluate the noise levels dogs are exposed to in an animal shelter […]

The Effect of Zoo Visitors on the Behaviour and Welfare of Zoo Mammals

There is evidence that the presence of the visiting public affects the behaviour of zoo-housed mammals. Understanding the effect of visitors is important in improving animal welfare, achieving zoo conservation goals, increasing visitor education/entertainment, and facilitating interpretation of data on zoo animal biology. A series of studies and experiments focusing on the effect of zoo […]

Effects of construction noise on behavior and cortisol levels in a pair of captive giant pandas (Ailuropoda melanoleuca)

Abstract 10.1002/zoo.20098.abs Studies of the effects of ambient noise on animals have found variable results. A study was conducted at the Smithsonian’s National Zoological Park to determine what effect short-term demolition work would have on the behavior and cortisol excretion of giant pandas. Behavioral and endocrine differences were examined during the presence and absence of […]

Monitoring stress in captive giant pandas (Ailuropoda melanoleuca): behavioral and hormonal responses to ambient noise

Abstract 10.1002/zoo.10124.abs Anthropogenic noise may impact captive breeding programs for endangered species. We recorded ambient noise and monitored potential behavioral and hormonal indices of stress in two captive giant pandas for 4 years. Statistical analyses were conducted for each individual separately, which allowed us to generalize only to these two animals. These preliminary findings indicate […]

Noise in dog kenneling: Is barking a welfare problem for dogs

Noise levels (sound pressure levels, SPLs) were monitored over 24 and 48 h in a number of different types of kennels including shelters, training establishments and research laboratories. Two measures of SPL were used, Lpeak and Leq, over both low (1 Hz-20 kHz) and high (12.5–70 kHz) frequency ranges and using a linear weighting. At […]