Skip to content
Catholic Online Logo

By Catholic Online (NEWS CONSORTIUM)

11/4/2013 (2 years ago)

Catholic Online (

Difference of wagging tail on left or right reveals a lot, researchers say

Some dogs wave their tails to their right, others to their left. Why is that? Scientists have now found out just how the movements of a dog's tail are linked to its mood.

These findings could give owners, veterinarians and trainers a better insight into their animal's emotions.

These findings could give owners, veterinarians and trainers a better insight into their animal's emotions.


By Catholic Online (NEWS CONSORTIUM)

Catholic Online (

11/4/2013 (2 years ago)

Published in Europe

Keywords: Dogs, tail wags, brain reaction, veterinary science

LOS ANGELES, CA (Catholic Online) - Happy dogs wag their tails more to the right - which is from the dog's point of view, while nervous dogs have a left-dominated swish, previous studies have suggested.

It's been learned that dogs themselves can spot and respond to these subtle tail differences. As published in the journal, Current Biology, Professor Georgio Vallortigara says that "It is very well known in humans, that the left and right side of the brain are differently involved in stimuli that invokes positive or negative emotions.

A neuro-scientist from the University of Trento, Vallortigara says that "Here we attempted to look at it in other species." Just as in humans, the right side of the brain for dogs was responsible for left-handed movement and vice versa. The two hemispheres played different roles in emotions.

In order to research this theory, the researchers monitored the animals as they watched films of other dogs and then measured the pets' heart rates and analyzed their behavior.

"We presented dogs with movies of dogs - either a naturalistic version or a silhouette to get rid of any other confounding issues, and we could doctor the movement of the tail and present the tail more to the left or right," Vallortigara says.

When the dogs saw an otherwise expressionless dog move its tail to the right (from the tail-wagging dog's point of view), they stayed perfectly relaxed. But when they spotted a tail veer predominantly to the left, their heart rates picked up and they looked anxious.

Vallortigara said he didn't think that the dogs were intentionally communicating with each other through these movements, believing that the animals learned from experience what moves they should and shouldn't feel worried about.

"If you have several meetings with other dogs, and frequently their tail wagging one way is associated with a more friendly behavior, and the right side is producing a less friendly behavior, you respond on the basis of that experience."

These findings could give owners, veterinarians and trainers a better insight into their animal's emotions.

A visiting fellow at the University of Bristol's school of veterinary science, Dog behavior expert John Bradshaw says that this was not the first study to examine whether left and right were important to canines.

A University of Lincoln study discovered last year that dogs turn their heads to the left when looking at an aggressive dog and to the right when looking at a happy dog.

A birth foretold: click here to learn more!


Pope Francis: end world hunger through 'Prayer and Action'

Copywriter 2015 - Distributed by THE NEWS CONSORTIUM

Pope Francis Prayer Intentions for October 2015
That human trafficking, the modern form of slavery, may be eradicated.
Evangelization: That with a missionary spirit the Christian communities of Asia may announce the Gospel to those who are still awaiting it.


More Europe

Pope Francis orders sweeping audit of the Vatican Watch

Image of Pope Francis continues to clean up the Vatican, making the Church more efficient and better able to minister to the needs of the poor and vulnerable.

By Marshall Connolly, Catholic Online (CALIFORNIA NETWORK)

Pope Francis continues to clean up the Vatican, ordering a survey of all the city-state's finances. The unprecedented audit will reveal even more corruption and impose better controls on spending, while making more money available for charitable projects. LOS ANGELES, ... continue reading

The unexpected thing one Syrian refugee did for Germany that will melt your heart Watch

Image of Syrian refugee Alex Assali fed the homeless outside Berlin's Alexanderplatz station in an effort to give back to the city that has helped him, and other refugees, so much (Imgur).


Amid fears of ISIS infiltration and Muslim takeovers, one Syrian refugee took a stand against prejudiced tensions and thanked the city of Berlin on behalf of all refugees. LOS ANGELES, CA (Catholic Online) - Each Saturday, Alex Assali cooks and distributes food to ... continue reading

Concentration camps and Nazi language: Berlin guards caught on tape speaking unbelievably cruel about refugees Watch

Image of Berlin guards at the office for refugees have reportedly been recorded using Nazi language and suggesting refugees be sent to concentration camps (Markus Heine/ NurPhoto).


Videos have been released showing Berlin guards around the office for refugees using "Nazi language" and suggesting the refugees be sent to concentration camps. LOS ANGELES, CA (Catholic Online) - Security guards working for private contractor Gegenbauer Security ... continue reading

SHOCK SHOW: Sacrilegious art exhibit in Spain uses 240 stolen consecrated hosts Watch

Image of Photos of the theft of the Hosts and their placement on the ground are shown in a public art gallery in Pamplona.

By Catholic News Agency

Critics of Pamplona's city council say it deliberately attacked Catholics and broke Spanish law by using city property to display a sacrilegious art exhibit with more than 240 stolen consecrated Hosts. Madrid, Spain (CNA) - The Spanish artist Abel Azcona stole ... continue reading

French Hostage Situation: Two armed suspects engage in shootout with French police Watch

Image of French police engaged in a shootout with two suspects armed with Kalashnikovs (Not pictured).


Two suspects armed with Kalashnikov rifles engaged in a shootout with French police in Toubaix, France. LOS ANGELES, CA (Catholic Online) - The suspects are believed to have taken a bank director and his family hostage, but very little is currently known.[media ... continue reading

Vatican corruption: Journalists stand trial Watch

Image of Gianluigi Nuzzi and Emiliano Fittipaldi must stand trial at the Vatican for publishing confidential documents (Reuters).


Following the publication of books claiming the Holy See was mismanaged and spoiled through corruption, five people went on trial at the Vatican on Tuesday. Two of the five on trial were Italian Journalists Gianluigi Nuzzi and Emiliano Fittipaldi, neither of whom ... continue reading

Undercover reporter reveals secret FEMALE ISIS organization in Britain Watch

Image of One veiled ISIS sympathizer was filmed during the undercover investigation (Channel 4).


In a new British documentary titled The British Women Supporters Unveiled, one young female reporter goes undercover to infiltrate a secret Muslim organization designed to garner sympathy for the Islamic State. LOS ANGELES, CA (Catholic Online) - The reporter, who uses ... continue reading

OUTRAGEOUS: Find out why The Lord's Prayer was BANNED from Just Pray movie theater ad Watch

Image of


An advertisement featuring the Lord's Prayer has been banned from movie theaters in England. According to the Church of England, the policy that prevents the prayer advertisement did not exist when they began production on the commercial. LOS ANGELES, CA (Catholic ... continue reading

Swiss farmer finds 4,000 extremely rare Roman coins in his orchard Watch

Image of The cache of coins is estimated to be more than 1,700 years old.


A Swiss farmer was tilling his orchard in Ueken, in the northern canton of Aargau, Switzerland, when he spotted something shiny on the ground. He had inadvertently stumbled across a treasure trove of Roman-era coins - 4,166 in all, some dating as back as 274 ... continue reading

Five people indicted by Vatican in 'Vati-leaks' scandal Watch

Image of Journalists Gianluigi Nuzzi and Emiliano Fittipaldi (pictured), had both recently published books, citing specific Vatican documents detailing waste, mismanagement, and greed.


A judge, rendering a decision in a scandal involving Vatican finances has indicted five people, which include two journalists and a Vatican monsignor. Information linking the Vatican to financial malfeasance, as well as related graft and corruption called ... continue reading

All Europe News


Newsletter Sign Up icon

Stay up to date with the latest news, information, and special offers

Subscribe to Catholic OnlineYouTube Channel

the FEED
by Catholic Online

Daily Readings

Reading 1, Isaiah 11:1-10
1 A shoot will spring from the stock of Jesse, a new shoot will grow from ... Read More

Psalm, Psalms 72:1, 7-8, 12-13, 17
1 [Of Solomon] God, endow the king with your own fair judgement, the son ... Read More

Gospel, Luke 10:21-24
21 Just at this time, filled with joy by the Holy Spirit, he said, 'I ... Read More

Saint of the Day

Saint of the Day for December 1st, 2015 Image

St. Eligius
December 1: Eligius (also known as Eloi) was born around 590 ... Read More