Wolves howl because they care
When a member of the wolf pack leaves the group, the howling by those left behind isn't a reflection of stress but of the quality of their relationships. So say researchers based on a study of nine wolves from two packs living at Austria's Wolf Science Center that appears in Current Biology, a Cell Press publication, on August 22. The findings shed important light on the degree to which animal vocal production can be considered as voluntary, the researchers say.
"Our results suggest the social relationship can explain more of the variation we see in howling behavior than the emotional state of the wolf," says Friederike Range of the Messerli Research Institute at the University of Veterinary Medicine Vienna. "This suggests that wolves, to a certain extent, may be able to use their vocalizations in a flexible way."
Scientists have known very little about why animals make the sounds that they do. Are they uncontrollable emotional responses? Or do animals have the ability to change those vocalizations based on their own understanding of the social context?
At the Wolf Science Center, human handlers typically take individual wolves out for walks on a leash, one at a time. On those occasions, they knew, the remaining pack mates always howl.
To better understand why, Range and her colleagues measured the wolves' stress hormone levels. They also collected information on the wolves' dominance status in the pack and their preferred partners. As they took individual wolves out for long walks, they recorded the reactions of each of their pack mates.
Those observations show that wolves howl more when a wolf they have a better relationship with leaves the group and when that individual is of high social rank. The amount of howling did not correspond to higher levels of the stress hormone cortisol.
"Our data suggest that howling is not a simple stress response to being separated from close associates but instead may be used more flexibly to maintain contact and perhaps to aid in reuniting with allies," Range says.
Source: Cell Press
- Wolves howl because they carefrom Science DailyThu, 22 Aug 2013, 13:30:20 EDT
- Lonely wolf? Wolves howl when they miss their friendsfrom MSNBC: ScienceThu, 22 Aug 2013, 13:01:21 EDT
- Why do wolves howl? They may be missing their friends or leadersfrom MSNBC: ScienceThu, 22 Aug 2013, 12:31:03 EDT
- Howling wolves gives clue to top dogfrom BBC News: Science & NatureThu, 22 Aug 2013, 12:30:45 EDT
- Wolves Howl to 'Keep in Touch' with Friendsfrom Live ScienceThu, 22 Aug 2013, 12:30:13 EDT
- Wolves howl because they carefrom PhysorgThu, 22 Aug 2013, 12:00:27 EDT
Latest Science NewsletterGet the latest and most popular science news articles of the week in your Inbox! It's free!
Check out our next project, Biology.Net
From other science news sites
Popular science news articles
- Astronomers release spectacular survey of the distant universe
- Immune system link to kidney disease risk, research finds
- Adélie penguin population in Antarctica threatened by climate change
- Air pollution linked to increased rates of kidney disease
- The Lancet: Zika virus identified in brain and placenta tissue, strengthening link to birth defects
- 'Bugs' on the subway: Monitoring the microbial environment to improve public health
- RIT professors create new method for identifying black holes
- Sign languages provide insight into universal linguistic short-cuts
- The brain watched during language learning
- Climate study finds human fingerprint in Northern Hemisphere greening
- High levels of education linked to heightened brain tumor risk
- NASA sees Tropical Storm Danielle ending over Mexico
- Researchers provide new insights on coral bleaching
- Has incidence of Parkinson's disease increased over past 30 years?
- Mayo Clinic study shows increase in Parkinson's disease over 30 years