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Date: 05/11/25
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Our Goals

  1. Acquire and make easily accessible to zoo and aquarium professionals the current body of knowledge on animal welfare and ethics.
  2. Conduct and facilitate welfare assessments and applied welfare research on captive exotic animals.
  3. Convene important discussions and presentations on captive exotic animal welfare and ethics.
  4. Train professionals on captive exotic animal welfare best practices and policies.
  5. Recognize advances in improving captive exotic animal welfare and ethics through awards.
URL: https://detroitzoo.org/resources/?fwp_search=Ross%20Milam&ignore=title%2Cabstract%2Cpublication%2Ckeywords

Chimpanzees (Pan troglodytes) in US zoos, sanctuaries, and research facilities: A survey-based comparison of species-typical behaviors

Authors: Andrea W Clay, Stephen R Ross, Susan Lambeth, Maribel Vazquez, Sarah Breaux, Rhonda Pietsch, Amy Fultz, Michael Lammey, Sarah L Jacobson, Jaine E Perlman

Publication/Journal: Animals

Keywords: ape, chimpanzee, primate, species-typical behavior, welfare

2023

Assessing chimpanzees’ fluency of movement: applications for monitoring health and welfare

Authors: Lydia M Hopper, Benjamin R Lake, Jesse G Leinwand, Amy Fultz, Stephen R Ross

Publication/Journal: Applied Animal Behaviour Science

Keywords: aging, geriatric care, locomotion, mobility, primate, quality of life

2022

Monitoring the behaviour and stress physiology of male gorillas Gorilla gorilla gorilla for one year following bachelor group formation

Authors: Katherine J Fowler, Lydia M Hopper, Stephen R Ross, Maureen Leahy, Rachel M Santymire

Publication/Journal: Journal of Zoo and Aquarium Research

Keywords: androgens, behaviour, glucocorticoids, non-invasive, primates, proximity, social introductions

2022

Assessing the potential impact of zoo visitors on the welfare and cognitive performance of Japanese macaques

Authors: Sarah M Huskisson, Christina R Doelling, Stephen R Ross, Lydia M Hopper

Publication/Journal: Applied Animal Behaviour Science

Keywords: *cognitive bias, attention bias, monkey, touchscreen, visitor effect, zoo research

2021

A Comparative Perspective on Three Primate Species’ Responses to a Pictorial Emotional Stroop Task

Authors: Lydia M Hopper, Matthias Allritz, Crystal L Egelkamp, Sarah M Huskisson, Sarah L Jacobson, Jesse G Leinwand, Stephen R Ross

Publication/Journal: Animals

Keywords: *cognitive bias, affect, attentional bias, emotions, snake detection theory, Stroop effect, touchscreen, welfare, zoo

2021

Do zoo visitors induce attentional bias effects in primates completing cognitive tasks?

Authors: Sarah M Huskisson, Stephen R Ross, Lydia M Hopper

Publication/Journal: Animal Cognition

Keywords: attention bias, cognition, match-to-sample, monkey, visitor effect, welfare

2021

An evaluation of thermal imaging as a welfare monitoring tool for captive chimpanzees

Authors: Stephen R Ross, Benjamin R Lake, Amy Fultz, Lydia M Hopper

Publication/Journal: Primates

Keywords: behavioral observation, chimpanzees, thermal imaging, welfare

2021

The relationship between personality, season, and wounding receipt in zoo‐housed Japanese macaques (Macaca fuscata): A multi‐institutional study

Authors: Christina R Doelling, Katherine A Cronin, Stephen R Ross, Lydia M Hopper

Publication/Journal: American Journal of Primatology

Keywords: animal welfare, macaques, personality, questionnaire, seasonal affects, wounding, zoo welfare

2021

The use of biofloors in great ape zoo exhibits

Authors: Jesse G Leinwand, Jill A Moyse, Lydia M Hopper, Maureen Leahy, Stephen R Ross

Publication/Journal: Journal of Zoo and Aquarium Research

Keywords: bedding, biofloor, deep litter, exhibit design, great apes, primates, welfare, zoo

2021

Hens with benefits: Can environmental enrichment make chickens more resilient to stress?

Authors: Misha Ross, Quinn Rausch, Brittany Vandenberg, Georgia Mason

Publication/Journal: Physiology & Behavior

Keywords: chickens, environmental enrichment, stress, welfare

2020

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